diff --git a/.changeset/witty-avocados-pump.md b/.changeset/witty-avocados-pump.md
new file mode 100644
index 0000000000..e3d781c8d3
--- /dev/null
+++ b/.changeset/witty-avocados-pump.md
@@ -0,0 +1,5 @@
+---
+'@backstage/backend-common': patch
+---
+
+Deprecate the legacy error and request logging handler types, respectively: `ErrorHandlerOptions` and `RequestLoggingHandlerFactory`.
diff --git a/packages/backend-common/api-report.md b/packages/backend-common/api-report.md
index 84328924bd..b508796d9a 100644
--- a/packages/backend-common/api-report.md
+++ b/packages/backend-common/api-report.md
@@ -48,21 +48,21 @@ import { PluginMetadataService } from '@backstage/backend-plugin-api';
 import { PushResult } from 'isomorphic-git';
 import { Readable } from 'stream';
 import { ReadCommitResult } from 'isomorphic-git';
-import type { ReadTreeOptions as ReadTreeOptions_2 } from '@backstage/backend-plugin-api';
-import type { ReadTreeResponse as ReadTreeResponse_2 } from '@backstage/backend-plugin-api';
-import type { ReadTreeResponseDirOptions as ReadTreeResponseDirOptions_2 } from '@backstage/backend-plugin-api';
-import type { ReadTreeResponseFile as ReadTreeResponseFile_2 } from '@backstage/backend-plugin-api';
-import type { ReadUrlOptions as ReadUrlOptions_2 } from '@backstage/backend-plugin-api';
-import type { ReadUrlResponse as ReadUrlResponse_2 } from '@backstage/backend-plugin-api';
+import { ReadTreeOptions as ReadTreeOptions_2 } from '@backstage/backend-plugin-api';
+import { ReadTreeResponse as ReadTreeResponse_2 } from '@backstage/backend-plugin-api';
+import { ReadTreeResponseDirOptions as ReadTreeResponseDirOptions_2 } from '@backstage/backend-plugin-api';
+import { ReadTreeResponseFile as ReadTreeResponseFile_2 } from '@backstage/backend-plugin-api';
+import { ReadUrlOptions as ReadUrlOptions_2 } from '@backstage/backend-plugin-api';
+import { ReadUrlResponse as ReadUrlResponse_2 } from '@backstage/backend-plugin-api';
 import { RequestHandler } from 'express';
 import { resolvePackagePath as resolvePackagePath_2 } from '@backstage/backend-plugin-api';
 import { resolveSafeChildPath as resolveSafeChildPath_2 } from '@backstage/backend-plugin-api';
 import { RootConfigService } from '@backstage/backend-plugin-api';
 import { Router } from 'express';
 import { SchedulerService } from '@backstage/backend-plugin-api';
-import type { SearchOptions as SearchOptions_2 } from '@backstage/backend-plugin-api';
-import type { SearchResponse as SearchResponse_2 } from '@backstage/backend-plugin-api';
-import type { SearchResponseFile as SearchResponseFile_2 } from '@backstage/backend-plugin-api';
+import { SearchOptions as SearchOptions_2 } from '@backstage/backend-plugin-api';
+import { SearchResponse as SearchResponse_2 } from '@backstage/backend-plugin-api';
+import { SearchResponseFile as SearchResponseFile_2 } from '@backstage/backend-plugin-api';
 import { Server } from 'http';
 import { ServiceRef } from '@backstage/backend-plugin-api';
 import { TokenManagerService } from '@backstage/backend-plugin-api';
@@ -230,7 +230,7 @@ export function errorHandler(
   options?: ErrorHandlerOptions,
 ): ErrorRequestHandler;
 
-// @public
+// @public @deprecated
 export type ErrorHandlerOptions = {
   showStackTraces?: boolean;
   logger?: LoggerService;
@@ -538,7 +538,7 @@ export function redactWinstonLogLine(
 // @public @deprecated
 export function requestLoggingHandler(logger?: LoggerService): RequestHandler;
 
-// @public
+// @public @deprecated
 export type RequestLoggingHandlerFactory = (
   logger?: LoggerService,
 ) => RequestHandler;
diff --git a/packages/backend-common/src/auth/createLegacyAuthAdapters.ts b/packages/backend-common/src/auth/createLegacyAuthAdapters.ts
index 94f997640d..8bef5ddcc8 100644
--- a/packages/backend-common/src/auth/createLegacyAuthAdapters.ts
+++ b/packages/backend-common/src/auth/createLegacyAuthAdapters.ts
@@ -43,7 +43,7 @@ import {
 } from '@backstage/plugin-auth-node';
 import { decodeJwt } from 'jose';
 import { TokenManager } from '../deprecated';
-import { PluginEndpointDiscovery } from '../discovery';
+import { PluginEndpointDiscovery } from '../deprecated';
 import { JsonObject } from '@backstage/types';
 
 class AuthCompat implements AuthService {
diff --git a/packages/backend-common/src/config.ts b/packages/backend-common/src/config.ts
index 733cd62390..8e5e8d7be7 100644
--- a/packages/backend-common/src/config.ts
+++ b/packages/backend-common/src/config.ts
@@ -22,7 +22,7 @@ import {
 import { LoggerService } from '@backstage/backend-plugin-api';
 import { AppConfig, Config } from '@backstage/config';
 import { LoadConfigOptionsRemote } from '@backstage/config-loader';
-import { setRootLoggerRedactionList } from './logging/createRootLogger';
+import { setRootLoggerRedactionList } from './deprecated/logging/createRootLogger';
 
 /**
  * Load configuration for a Backend.
diff --git a/packages/backend-common/src/deprecated/index.ts b/packages/backend-common/src/deprecated/index.ts
index 5309240ccb..1099633e07 100644
--- a/packages/backend-common/src/deprecated/index.ts
+++ b/packages/backend-common/src/deprecated/index.ts
@@ -14,15 +14,59 @@
  * limitations under the License.
  */
 
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { HostDiscovery as _HostDiscovery } from '../../../backend-defaults/src/entrypoints/discovery/HostDiscovery';
+
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
 import { CacheManager as _CacheManager } from '../../../backend-defaults/src/entrypoints/cache/CacheManager';
+
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
 import {
   type PluginCacheManager as _PluginCacheManager,
   type CacheManagerOptions as _CacheManagerOptions,
 } from '../../../backend-defaults/src/entrypoints/cache/types';
 
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { AzureUrlReader as _AzureUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/AzureUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { BitbucketCloudUrlReader as _BitbucketCloudUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketCloudUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { BitbucketUrlReader as _BitbucketUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { BitbucketServerUrlReader as _BitbucketServerUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketServerUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { GerritUrlReader as _GerritUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GerritUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { GithubUrlReader as _GithubUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GithubUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { GitlabUrlReader as _GitlabUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GitlabUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { GiteaUrlReader as _GiteaUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GiteaUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { HarnessUrlReader as _HarnessUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/HarnessUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { AwsS3UrlReader as _AwsS3UrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/AwsS3UrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { FetchUrlReader as _FetchUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/FetchUrlReader';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { UrlReaders as _UrlReaders } from '../../../backend-defaults/src/entrypoints/urlReader/lib/UrlReaders';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { ReadUrlResponseFactory as _ReadUrlResponseFactory } from '../../../backend-defaults/src/entrypoints/urlReader/lib/ReadUrlResponseFactory';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import type { UrlReadersOptions as _UrlReadersOptions } from '../../../backend-defaults/src/entrypoints/urlReader/lib/UrlReaders';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import type { FromReadableArrayOptions as _FromReadableArrayOptions } from '../../../backend-defaults/src/entrypoints/urlReader/lib/types';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import type {
+  ReaderFactory as _ReaderFactory,
+  ReadTreeResponseFactory as _ReadTreeResponseFactory,
+  ReadTreeResponseFactoryOptions as _ReadTreeResponseFactoryOptions,
+  ReadUrlResponseFactoryFromStreamOptions as _ReadUrlResponseFactoryFromStreamOptions,
+  UrlReaderPredicateTuple as _UrlReaderPredicateTuple,
+} from '../../../backend-defaults/src/entrypoints/urlReader/lib/types';
+
 import {
+  DiscoveryService,
   CacheService,
   CacheServiceOptions,
   CacheServiceSetOptions,
@@ -30,10 +74,55 @@ import {
   resolvePackagePath as _resolvePackagePath,
   resolveSafeChildPath as _resolveSafeChildPath,
   isChildPath as _isChildPath,
+  ReadTreeOptions as _ReadTreeOptions,
+  ReadTreeResponse as _ReadTreeResponse,
+  ReadTreeResponseFile as _ReadTreeResponseFile,
+  ReadTreeResponseDirOptions as _ReadTreeResponseDirOptions,
+  ReadUrlOptions as _ReadUrlOptions,
+  ReadUrlResponse as _ReadUrlResponse,
+  SearchOptions as _SearchOptions,
+  SearchResponse as _SearchResponse,
+  SearchResponseFile as _SearchResponseFile,
+  UrlReaderService as _UrlReaderService,
 } from '@backstage/backend-plugin-api';
 
 export * from './scm';
 export * from './tokens';
+export * from './logging';
+export * from './service';
+export * from './middleware';
+
+/**
+ * @public
+ * @deprecated Use `DiscoveryService` from `@backstage/backend-plugin-api` instead
+ */
+export type PluginEndpointDiscovery = DiscoveryService;
+
+/**
+ * HostDiscovery is a basic PluginEndpointDiscovery implementation
+ * that can handle plugins that are hosted in a single or multiple deployments.
+ *
+ * The deployment may be scaled horizontally, as long as the external URL
+ * is the same for all instances. However, internal URLs will always be
+ * resolved to the same host, so there won't be any balancing of internal traffic.
+ *
+ * @public
+ * @deprecated Please import from `@backstage/backend-defaults/discovery` instead.
+ */
+export const HostDiscovery = _HostDiscovery;
+
+/**
+ * SingleHostDiscovery is a basic PluginEndpointDiscovery implementation
+ * that assumes that all plugins are hosted in a single deployment.
+ *
+ * The deployment may be scaled horizontally, as long as the external URL
+ * is the same for all instances. However, internal URLs will always be
+ * resolved to the same host, so there won't be any balancing of internal traffic.
+ *
+ * @public
+ * @deprecated Use `HostDiscovery` from `@backstage/backend-defaults/discovery` instead
+ */
+export const SingleHostDiscovery = _HostDiscovery;
 
 /**
  * @public
@@ -98,3 +187,184 @@ export const resolveSafeChildPath = _resolveSafeChildPath;
  * Please use the `isChildPath` function from the `@backstage/cli-common` package instead.
  */
 export const isChildPath = _isChildPath;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const AzureUrlReader = _AzureUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const BitbucketCloudUrlReader = _BitbucketCloudUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const BitbucketUrlReader = _BitbucketUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const BitbucketServerUrlReader = _BitbucketServerUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const GerritUrlReader = _GerritUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const GithubUrlReader = _GithubUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const GitlabUrlReader = _GitlabUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const GiteaUrlReader = _GiteaUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const HarnessUrlReader = _HarnessUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const AwsS3UrlReader = _AwsS3UrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const FetchUrlReader = _FetchUrlReader;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const UrlReaders = _UrlReaders;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export const ReadUrlResponseFactory = _ReadUrlResponseFactory;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type UrlReadersOptions = _UrlReadersOptions;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type FromReadableArrayOptions = _FromReadableArrayOptions;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type ReaderFactory = _ReaderFactory;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type ReadTreeResponseFactory = _ReadTreeResponseFactory;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type ReadTreeResponseFactoryOptions = _ReadTreeResponseFactoryOptions;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type ReadUrlResponseFactoryFromStreamOptions =
+  _ReadUrlResponseFactoryFromStreamOptions;
+
+/**
+ * @public
+ * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
+ */
+export type UrlReaderPredicateTuple = _UrlReaderPredicateTuple;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadTreeOptions` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadTreeOptions = _ReadTreeOptions;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadTreeResponse` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadTreeResponse = _ReadTreeResponse;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadTreeResponseFile` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadTreeResponseFile = _ReadTreeResponseFile;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadTreeResponseDirOptions` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadTreeResponseDirOptions = _ReadTreeResponseDirOptions;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadUrlOptions` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadUrlOptions = _ReadUrlOptions;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceReadUrlResponse` from `@backstage/backend-plugin-api` instead
+ */
+export type ReadUrlResponse = _ReadUrlResponse;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceSearchOptions` from `@backstage/backend-plugin-api` instead
+ */
+export type SearchOptions = _SearchOptions;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceSearchResponse` from `@backstage/backend-plugin-api` instead
+ */
+export type SearchResponse = _SearchResponse;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderServiceSearchResponseFile` from `@backstage/backend-plugin-api` instead
+ */
+export type SearchResponseFile = _SearchResponseFile;
+
+/**
+ * @public
+ * @deprecated Use `UrlReaderService` from `@backstage/backend-plugin-api` instead
+ */
+export type UrlReader = _UrlReaderService;
diff --git a/packages/backend-common/src/logging/createRootLogger.ts b/packages/backend-common/src/deprecated/logging/createRootLogger.ts
similarity index 98%
rename from packages/backend-common/src/logging/createRootLogger.ts
rename to packages/backend-common/src/deprecated/logging/createRootLogger.ts
index 20ee272b79..b177024601 100644
--- a/packages/backend-common/src/logging/createRootLogger.ts
+++ b/packages/backend-common/src/deprecated/logging/createRootLogger.ts
@@ -15,12 +15,12 @@
  */
 
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { WinstonLogger } from '../../../backend-app-api/src/logging/WinstonLogger';
+import { WinstonLogger } from '../../../../backend-app-api/src/logging/WinstonLogger';
 import { merge } from 'lodash';
 import * as winston from 'winston';
 import { format, LoggerOptions } from 'winston';
-import { setRootLogger } from './globalLoggers';
 import { TransformableInfo } from 'logform';
+import { setRootLogger } from './globalLoggers';
 
 const getRedacter = (() => {
   let redacter: ReturnType<typeof WinstonLogger.redacter> | undefined =
diff --git a/packages/backend-common/src/logging/globalLoggers.ts b/packages/backend-common/src/deprecated/logging/globalLoggers.ts
similarity index 100%
rename from packages/backend-common/src/logging/globalLoggers.ts
rename to packages/backend-common/src/deprecated/logging/globalLoggers.ts
diff --git a/packages/backend-common/src/deprecated/logging/index.ts b/packages/backend-common/src/deprecated/logging/index.ts
new file mode 100644
index 0000000000..b223f5c946
--- /dev/null
+++ b/packages/backend-common/src/deprecated/logging/index.ts
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { getRootLogger, getVoidLogger, setRootLogger } from './globalLoggers';
+export {
+  createRootLogger,
+  redactWinstonLogLine,
+  coloredFormat,
+} from './createRootLogger';
diff --git a/packages/backend-common/src/middleware/errorHandler.test.ts b/packages/backend-common/src/deprecated/middleware/errorHandler.test.ts
similarity index 100%
rename from packages/backend-common/src/middleware/errorHandler.test.ts
rename to packages/backend-common/src/deprecated/middleware/errorHandler.test.ts
index ab07a91022..2544a0a863 100644
--- a/packages/backend-common/src/middleware/errorHandler.test.ts
+++ b/packages/backend-common/src/deprecated/middleware/errorHandler.test.ts
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+import express from 'express';
+import { STATUS_CODES } from 'http';
+import createError from 'http-errors';
+import request from 'supertest';
 import {
   AuthenticationError,
   ConflictError,
@@ -23,11 +27,7 @@ import {
   NotModifiedError,
   ResponseError,
 } from '@backstage/errors';
-import express from 'express';
-import createError from 'http-errors';
-import request from 'supertest';
 import { errorHandler } from './errorHandler';
-import { STATUS_CODES } from 'http';
 
 describe('errorHandler', () => {
   it('gives default code and message', async () => {
diff --git a/packages/backend-common/src/middleware/errorHandler.ts b/packages/backend-common/src/deprecated/middleware/errorHandler.ts
similarity index 92%
rename from packages/backend-common/src/middleware/errorHandler.ts
rename to packages/backend-common/src/deprecated/middleware/errorHandler.ts
index 346fe01645..618e30ffa1 100644
--- a/packages/backend-common/src/middleware/errorHandler.ts
+++ b/packages/backend-common/src/deprecated/middleware/errorHandler.ts
@@ -16,15 +16,16 @@
 
 import { ErrorRequestHandler } from 'express';
 import { LoggerService } from '@backstage/backend-plugin-api';
-import { getRootLogger } from '../logging';
 import { ConfigReader } from '@backstage/config';
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { MiddlewareFactory } from '../../../backend-app-api/src/http/MiddlewareFactory';
+import { MiddlewareFactory } from '../../../../backend-app-api/src/http/MiddlewareFactory';
+import { getRootLogger } from '../logging';
 
 /**
  * Options passed to the {@link errorHandler} middleware.
  *
  * @public
+ * @deprecated This type is being deprecated along with the {@link @backstage/backend-common#errorHandler} function.
  */
 export type ErrorHandlerOptions = {
   /**
diff --git a/packages/backend-common/src/discovery/index.ts b/packages/backend-common/src/deprecated/middleware/index.ts
similarity index 84%
rename from packages/backend-common/src/discovery/index.ts
rename to packages/backend-common/src/deprecated/middleware/index.ts
index 827fd059ad..6c284cc6ec 100644
--- a/packages/backend-common/src/discovery/index.ts
+++ b/packages/backend-common/src/deprecated/middleware/index.ts
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-export {
-  HostDiscovery,
-  SingleHostDiscovery,
-  type PluginEndpointDiscovery,
-} from './HostDiscovery';
+export * from './errorHandler';
+export * from './notFoundHandler';
+export * from './requestLoggingHandler';
diff --git a/packages/backend-common/src/middleware/notFoundHandler.test.ts b/packages/backend-common/src/deprecated/middleware/notFoundHandler.test.ts
similarity index 100%
rename from packages/backend-common/src/middleware/notFoundHandler.test.ts
rename to packages/backend-common/src/deprecated/middleware/notFoundHandler.test.ts
diff --git a/packages/backend-common/src/middleware/notFoundHandler.ts b/packages/backend-common/src/deprecated/middleware/notFoundHandler.ts
similarity index 93%
rename from packages/backend-common/src/middleware/notFoundHandler.ts
rename to packages/backend-common/src/deprecated/middleware/notFoundHandler.ts
index 19c01ede9c..f499418dba 100644
--- a/packages/backend-common/src/middleware/notFoundHandler.ts
+++ b/packages/backend-common/src/deprecated/middleware/notFoundHandler.ts
@@ -15,7 +15,7 @@
  */
 
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { MiddlewareFactory } from '../../../backend-app-api/src/http/MiddlewareFactory';
+import { MiddlewareFactory } from '../../../../backend-app-api/src/http/MiddlewareFactory';
 import { ConfigReader } from '@backstage/config';
 import { RequestHandler } from 'express';
 import { getRootLogger } from '../logging';
diff --git a/packages/backend-common/src/middleware/requestLoggingHandler.test.ts b/packages/backend-common/src/deprecated/middleware/requestLoggingHandler.test.ts
similarity index 100%
rename from packages/backend-common/src/middleware/requestLoggingHandler.test.ts
rename to packages/backend-common/src/deprecated/middleware/requestLoggingHandler.test.ts
diff --git a/packages/backend-common/src/middleware/requestLoggingHandler.ts b/packages/backend-common/src/deprecated/middleware/requestLoggingHandler.ts
similarity index 86%
rename from packages/backend-common/src/middleware/requestLoggingHandler.ts
rename to packages/backend-common/src/deprecated/middleware/requestLoggingHandler.ts
index fd6973f9b6..74859b4741 100644
--- a/packages/backend-common/src/middleware/requestLoggingHandler.ts
+++ b/packages/backend-common/src/deprecated/middleware/requestLoggingHandler.ts
@@ -15,11 +15,11 @@
  */
 
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { MiddlewareFactory } from '../../../backend-app-api/src/http/MiddlewareFactory';
+import { MiddlewareFactory } from '../../../../backend-app-api/src/http/MiddlewareFactory';
 import { RequestHandler } from 'express';
+import { ConfigReader } from '@backstage/config';
 import { LoggerService } from '@backstage/backend-plugin-api';
 import { getRootLogger } from '../logging';
-import { ConfigReader } from '@backstage/config';
 
 /**
  * Logs incoming requests.
@@ -27,7 +27,7 @@ import { ConfigReader } from '@backstage/config';
  * @public
  * @param logger - An optional logger to use. If not specified, the root logger will be used.
  * @returns An Express request handler
- * @deprecated @deprecated Use {@link @backstage/backend-app-api#MiddlewareFactory.create.logging} instead
+ * @deprecated Use {@link @backstage/backend-app-api#MiddlewareFactory.create.logging} instead
  */
 export function requestLoggingHandler(logger?: LoggerService): RequestHandler {
   return MiddlewareFactory.create({
diff --git a/packages/backend-common/src/service/createServiceBuilder.ts b/packages/backend-common/src/deprecated/service/createServiceBuilder.ts
similarity index 100%
rename from packages/backend-common/src/service/createServiceBuilder.ts
rename to packages/backend-common/src/deprecated/service/createServiceBuilder.ts
diff --git a/packages/backend-common/src/deprecated/service/index.ts b/packages/backend-common/src/deprecated/service/index.ts
new file mode 100644
index 0000000000..a9fc43c22a
--- /dev/null
+++ b/packages/backend-common/src/deprecated/service/index.ts
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { createServiceBuilder } from './createServiceBuilder';
+export type { ServiceBuilder, RequestLoggingHandlerFactory } from './types';
diff --git a/packages/backend-common/src/service/lib/ServiceBuilderImpl.test.ts b/packages/backend-common/src/deprecated/service/lib/ServiceBuilderImpl.test.ts
similarity index 100%
rename from packages/backend-common/src/service/lib/ServiceBuilderImpl.test.ts
rename to packages/backend-common/src/deprecated/service/lib/ServiceBuilderImpl.test.ts
diff --git a/packages/backend-common/src/service/lib/ServiceBuilderImpl.ts b/packages/backend-common/src/deprecated/service/lib/ServiceBuilderImpl.ts
similarity index 98%
rename from packages/backend-common/src/service/lib/ServiceBuilderImpl.ts
rename to packages/backend-common/src/deprecated/service/lib/ServiceBuilderImpl.ts
index 039a9a51eb..1586d7c5c6 100644
--- a/packages/backend-common/src/service/lib/ServiceBuilderImpl.ts
+++ b/packages/backend-common/src/deprecated/service/lib/ServiceBuilderImpl.ts
@@ -22,7 +22,7 @@ import helmet, { HelmetOptions } from 'helmet';
 import { ContentSecurityPolicyOptions } from 'helmet/dist/types/middlewares/content-security-policy';
 import * as http from 'http';
 import { LoggerService } from '@backstage/backend-plugin-api';
-import { useHotCleanup } from '../../hot';
+import { useHotCleanup } from '../../../hot';
 import { getRootLogger } from '../../logging';
 import {
   errorHandler as defaultErrorHandler,
@@ -37,7 +37,7 @@ import {
   readHttpServerOptions,
   HttpServerOptions,
   createHttpServer,
-} from '../../../../backend-app-api/src/http';
+} from '../../../../../backend-app-api/src/http';
 
 export type CspOptions = Record<string, string[]>;
 
diff --git a/packages/backend-common/src/service/types.ts b/packages/backend-common/src/deprecated/service/types.ts
similarity index 96%
rename from packages/backend-common/src/service/types.ts
rename to packages/backend-common/src/deprecated/service/types.ts
index bb4f98cd1c..ace0712d2f 100644
--- a/packages/backend-common/src/service/types.ts
+++ b/packages/backend-common/src/deprecated/service/types.ts
@@ -128,6 +128,7 @@ export type ServiceBuilder = {
  * A factory for request loggers.
  *
  * @public
+ * @deprecated This type is being deprecated along with the {@link @backstage/backend-common#createServiceBuilder} function.
  */
 export type RequestLoggingHandlerFactory = (
   logger?: LoggerService,
diff --git a/packages/backend-common/src/discovery/HostDiscovery.ts b/packages/backend-common/src/discovery/HostDiscovery.ts
deleted file mode 100644
index ec8d02cce0..0000000000
--- a/packages/backend-common/src/discovery/HostDiscovery.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright 2020 The Backstage Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { HostDiscovery as _HostDiscovery } from '../../../backend-defaults/src/entrypoints/discovery/HostDiscovery';
-import { DiscoveryService } from '@backstage/backend-plugin-api';
-
-/**
- * @public
- * @deprecated Use `DiscoveryService` from `@backstage/backend-plugin-api` instead
- */
-export type PluginEndpointDiscovery = DiscoveryService;
-
-/**
- * HostDiscovery is a basic PluginEndpointDiscovery implementation
- * that can handle plugins that are hosted in a single or multiple deployments.
- *
- * The deployment may be scaled horizontally, as long as the external URL
- * is the same for all instances. However, internal URLs will always be
- * resolved to the same host, so there won't be any balancing of internal traffic.
- *
- * @public
- * @deprecated Please import from `@backstage/backend-defaults/discovery` instead.
- */
-export const HostDiscovery = _HostDiscovery;
-
-/**
- * SingleHostDiscovery is a basic PluginEndpointDiscovery implementation
- * that assumes that all plugins are hosted in a single deployment.
- *
- * The deployment may be scaled horizontally, as long as the external URL
- * is the same for all instances. However, internal URLs will always be
- * resolved to the same host, so there won't be any balancing of internal traffic.
- *
- * @public
- * @deprecated Use `HostDiscovery` from `@backstage/backend-defaults/discovery` instead
- */
-export const SingleHostDiscovery = _HostDiscovery;
diff --git a/packages/backend-common/src/index.ts b/packages/backend-common/src/index.ts
index bd6fdb2bb6..498b93ad8a 100644
--- a/packages/backend-common/src/index.ts
+++ b/packages/backend-common/src/index.ts
@@ -23,14 +23,12 @@
 export { legacyPlugin, makeLegacyPlugin } from './legacy';
 export type { LegacyCreateRouter } from './legacy';
 export { loadBackendConfig } from './config';
+export * from './deprecated';
 export * from './auth';
 export * from './cache';
-export * from './deprecated';
 export * from './database';
-export * from './discovery';
 export * from './hot';
 export * from './logging';
 export * from './middleware';
-export * from './reading';
 export * from './service';
 export * from './util';
diff --git a/packages/backend-common/src/logging/index.ts b/packages/backend-common/src/logging/index.ts
index e6b29afa15..10f949050c 100644
--- a/packages/backend-common/src/logging/index.ts
+++ b/packages/backend-common/src/logging/index.ts
@@ -14,10 +14,4 @@
  * limitations under the License.
  */
 
-export { getRootLogger, getVoidLogger, setRootLogger } from './globalLoggers';
-export {
-  createRootLogger,
-  redactWinstonLogLine,
-  coloredFormat,
-} from './createRootLogger';
 export { loggerToWinstonLogger } from './loggerToWinstonLogger';
diff --git a/packages/backend-common/src/middleware/index.ts b/packages/backend-common/src/middleware/index.ts
index f4f4fcde0b..f1754ef4d8 100644
--- a/packages/backend-common/src/middleware/index.ts
+++ b/packages/backend-common/src/middleware/index.ts
@@ -14,7 +14,4 @@
  * limitations under the License.
  */
 
-export * from './errorHandler';
-export * from './notFoundHandler';
-export * from './requestLoggingHandler';
 export * from './statusCheckHandler';
diff --git a/packages/backend-common/src/reading/index.ts b/packages/backend-common/src/reading/index.ts
deleted file mode 100644
index 14863d2044..0000000000
--- a/packages/backend-common/src/reading/index.ts
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Copyright 2020 The Backstage Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { AzureUrlReader as _AzureUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/AzureUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { BitbucketCloudUrlReader as _BitbucketCloudUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketCloudUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { BitbucketUrlReader as _BitbucketUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { BitbucketServerUrlReader as _BitbucketServerUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/BitbucketServerUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { GerritUrlReader as _GerritUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GerritUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { GithubUrlReader as _GithubUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GithubUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { GitlabUrlReader as _GitlabUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GitlabUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { GiteaUrlReader as _GiteaUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/GiteaUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { HarnessUrlReader as _HarnessUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/HarnessUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { AwsS3UrlReader as _AwsS3UrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/AwsS3UrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { FetchUrlReader as _FetchUrlReader } from '../../../backend-defaults/src/entrypoints/urlReader/lib/FetchUrlReader';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { UrlReaders as _UrlReaders } from '../../../backend-defaults/src/entrypoints/urlReader/lib/UrlReaders';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { ReadUrlResponseFactory as _ReadUrlResponseFactory } from '../../../backend-defaults/src/entrypoints/urlReader/lib/ReadUrlResponseFactory';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import type { UrlReadersOptions as _UrlReadersOptions } from '../../../backend-defaults/src/entrypoints/urlReader/lib/UrlReaders';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import type { FromReadableArrayOptions as _FromReadableArrayOptions } from '../../../backend-defaults/src/entrypoints/urlReader/lib/types';
-// eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import type {
-  ReaderFactory as _ReaderFactory,
-  ReadTreeResponseFactory as _ReadTreeResponseFactory,
-  ReadTreeResponseFactoryOptions as _ReadTreeResponseFactoryOptions,
-  ReadUrlResponseFactoryFromStreamOptions as _ReadUrlResponseFactoryFromStreamOptions,
-  UrlReaderPredicateTuple as _UrlReaderPredicateTuple,
-} from '../../../backend-defaults/src/entrypoints/urlReader/lib/types';
-
-import type {
-  ReadTreeOptions as _ReadTreeOptions,
-  ReadTreeResponse as _ReadTreeResponse,
-  ReadTreeResponseFile as _ReadTreeResponseFile,
-  ReadTreeResponseDirOptions as _ReadTreeResponseDirOptions,
-  ReadUrlOptions as _ReadUrlOptions,
-  ReadUrlResponse as _ReadUrlResponse,
-  SearchOptions as _SearchOptions,
-  SearchResponse as _SearchResponse,
-  SearchResponseFile as _SearchResponseFile,
-  UrlReaderService as _UrlReaderService,
-} from '@backstage/backend-plugin-api';
-
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const AzureUrlReader = _AzureUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const BitbucketCloudUrlReader = _BitbucketCloudUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const BitbucketUrlReader = _BitbucketUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const BitbucketServerUrlReader = _BitbucketServerUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const GerritUrlReader = _GerritUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const GithubUrlReader = _GithubUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const GitlabUrlReader = _GitlabUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const GiteaUrlReader = _GiteaUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const HarnessUrlReader = _HarnessUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const AwsS3UrlReader = _AwsS3UrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const FetchUrlReader = _FetchUrlReader;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const UrlReaders = _UrlReaders;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export const ReadUrlResponseFactory = _ReadUrlResponseFactory;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type UrlReadersOptions = _UrlReadersOptions;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type FromReadableArrayOptions = _FromReadableArrayOptions;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type ReaderFactory = _ReaderFactory;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type ReadTreeResponseFactory = _ReadTreeResponseFactory;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type ReadTreeResponseFactoryOptions = _ReadTreeResponseFactoryOptions;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type ReadUrlResponseFactoryFromStreamOptions =
-  _ReadUrlResponseFactoryFromStreamOptions;
-/**
- * @public
- * @deprecated Import from `@backstage/backend-defaults/urlReader` instead
- */
-export type UrlReaderPredicateTuple = _UrlReaderPredicateTuple;
-
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadTreeOptions` from `@backstage/backend-plugin-api` instead
- */
-export type ReadTreeOptions = _ReadTreeOptions;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadTreeResponse` from `@backstage/backend-plugin-api` instead
- */
-export type ReadTreeResponse = _ReadTreeResponse;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadTreeResponseFile` from `@backstage/backend-plugin-api` instead
- */
-export type ReadTreeResponseFile = _ReadTreeResponseFile;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadTreeResponseDirOptions` from `@backstage/backend-plugin-api` instead
- */
-export type ReadTreeResponseDirOptions = _ReadTreeResponseDirOptions;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadUrlOptions` from `@backstage/backend-plugin-api` instead
- */
-export type ReadUrlOptions = _ReadUrlOptions;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceReadUrlResponse` from `@backstage/backend-plugin-api` instead
- */
-export type ReadUrlResponse = _ReadUrlResponse;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceSearchOptions` from `@backstage/backend-plugin-api` instead
- */
-export type SearchOptions = _SearchOptions;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceSearchResponse` from `@backstage/backend-plugin-api` instead
- */
-export type SearchResponse = _SearchResponse;
-/**
- * @public
- * @deprecated Use `UrlReaderServiceSearchResponseFile` from `@backstage/backend-plugin-api` instead
- */
-export type SearchResponseFile = _SearchResponseFile;
-/**
- * @public
- * @deprecated Use `UrlReaderService` from `@backstage/backend-plugin-api` instead
- */
-export type UrlReader = _UrlReaderService;
diff --git a/packages/backend-common/src/service/createStatusCheckRouter.ts b/packages/backend-common/src/service/createStatusCheckRouter.ts
index b43bd5585c..1a5953a748 100644
--- a/packages/backend-common/src/service/createStatusCheckRouter.ts
+++ b/packages/backend-common/src/service/createStatusCheckRouter.ts
@@ -17,7 +17,8 @@
 import { LoggerService } from '@backstage/backend-plugin-api';
 import Router from 'express-promise-router';
 import express from 'express';
-import { errorHandler, statusCheckHandler, StatusCheck } from '../middleware';
+import { errorHandler } from '../deprecated';
+import { statusCheckHandler, StatusCheck } from '../middleware';
 
 /**
  * Creates a default status checking router, that you can add to your express
diff --git a/packages/backend-common/src/service/index.ts b/packages/backend-common/src/service/index.ts
index d01f25fad3..c2ae6ba87b 100644
--- a/packages/backend-common/src/service/index.ts
+++ b/packages/backend-common/src/service/index.ts
@@ -14,6 +14,4 @@
  * limitations under the License.
  */
 
-export { createServiceBuilder } from './createServiceBuilder';
 export { createStatusCheckRouter } from './createStatusCheckRouter';
-export type { ServiceBuilder, RequestLoggingHandlerFactory } from './types';