diff --git a/packages/rum-core/src/boot/preStartRum.ts b/packages/rum-core/src/boot/preStartRum.ts
index afd936adc8..7f25882199 100644
--- a/packages/rum-core/src/boot/preStartRum.ts
+++ b/packages/rum-core/src/boot/preStartRum.ts
@@ -16,7 +16,7 @@ import {
   initFetchObservable,
 } from '@datadog/browser-core'
 import type { TrackingConsentState, DeflateWorker } from '@datadog/browser-core'
-import { DeflateWorkerStatus, getDeflateWorkerStatus } from '../../../rum/src/domain/deflate'
+import { DeflateWorkerStatus, getDeflateWorkerStatus } from '../domain/deflate'
 import {
   validateAndBuildRumConfiguration,
   type RumConfiguration,
diff --git a/packages/rum-core/src/boot/rumPublicApi.ts b/packages/rum-core/src/boot/rumPublicApi.ts
index 2f00571a64..7824ef4763 100644
--- a/packages/rum-core/src/boot/rumPublicApi.ts
+++ b/packages/rum-core/src/boot/rumPublicApi.ts
@@ -32,7 +32,7 @@ import {
   createTrackingConsentState,
   timeStampToClocks,
 } from '@datadog/browser-core'
-import { DeflateWorkerStatus, getDeflateWorkerStatus } from '../../../rum/src/domain/deflate'
+import { DeflateWorkerStatus, getDeflateWorkerStatus } from '../domain/deflate'
 import type { LifeCycle } from '../domain/lifeCycle'
 import type { ViewHistory } from '../domain/contexts/viewHistory'
 import type { RumSessionManager } from '../domain/rumSessionManager'
diff --git a/packages/rum/src/domain/deflate/deflateEncoder.spec.ts b/packages/rum-core/src/domain/deflate/deflateEncoder.spec.ts
similarity index 100%
rename from packages/rum/src/domain/deflate/deflateEncoder.spec.ts
rename to packages/rum-core/src/domain/deflate/deflateEncoder.spec.ts
diff --git a/packages/rum/src/domain/deflate/deflateEncoder.ts b/packages/rum-core/src/domain/deflate/deflateEncoder.ts
similarity index 98%
rename from packages/rum/src/domain/deflate/deflateEncoder.ts
rename to packages/rum-core/src/domain/deflate/deflateEncoder.ts
index 6d357b1fd2..a20804240f 100644
--- a/packages/rum/src/domain/deflate/deflateEncoder.ts
+++ b/packages/rum-core/src/domain/deflate/deflateEncoder.ts
@@ -5,8 +5,8 @@ import type {
   DeflateWorker,
   EncoderResult,
 } from '@datadog/browser-core'
-import type { RumConfiguration } from '@datadog/browser-rum-core'
 import { addEventListener, addTelemetryDebug, assign, concatBuffers } from '@datadog/browser-core'
+import type { RumConfiguration } from '../configuration'
 
 export function createDeflateEncoder(
   configuration: RumConfiguration,
diff --git a/packages/rum/src/domain/deflate/deflateWorker.spec.ts b/packages/rum-core/src/domain/deflate/deflateWorker.spec.ts
similarity index 100%
rename from packages/rum/src/domain/deflate/deflateWorker.spec.ts
rename to packages/rum-core/src/domain/deflate/deflateWorker.spec.ts
diff --git a/packages/rum/src/domain/deflate/deflateWorker.ts b/packages/rum-core/src/domain/deflate/deflateWorker.ts
similarity index 99%
rename from packages/rum/src/domain/deflate/deflateWorker.ts
rename to packages/rum-core/src/domain/deflate/deflateWorker.ts
index 52dfd977cf..61859d5d3e 100644
--- a/packages/rum/src/domain/deflate/deflateWorker.ts
+++ b/packages/rum-core/src/domain/deflate/deflateWorker.ts
@@ -8,7 +8,7 @@ import {
   ONE_SECOND,
   DOCS_ORIGIN,
 } from '@datadog/browser-core'
-import type { RumConfiguration } from '@datadog/browser-rum-core'
+import type { RumConfiguration } from '../configuration'
 
 export const INITIALIZATION_TIME_OUT_DELAY = 30 * ONE_SECOND
 
diff --git a/packages/rum/src/domain/deflate/index.ts b/packages/rum-core/src/domain/deflate/index.ts
similarity index 100%
rename from packages/rum/src/domain/deflate/index.ts
rename to packages/rum-core/src/domain/deflate/index.ts
diff --git a/packages/rum-core/src/index.ts b/packages/rum-core/src/index.ts
index c7687443b7..0a1b50a6f0 100644
--- a/packages/rum-core/src/index.ts
+++ b/packages/rum-core/src/index.ts
@@ -40,3 +40,4 @@ export * from './domain/privacy'
 export { SessionReplayState } from './domain/rumSessionManager'
 export type { RumPlugin } from './domain/plugins'
 export type { MouseEventOnElement } from './domain/action/listenActionEvents'
+export * from './domain/deflate'
diff --git a/packages/rum-core/test/index.ts b/packages/rum-core/test/index.ts
index fcd3ab5cc6..52239fcda2 100644
--- a/packages/rum-core/test/index.ts
+++ b/packages/rum-core/test/index.ts
@@ -12,3 +12,4 @@ export * from './mockPageStateHistory'
 export * from './mockRumConfiguration'
 export * from './locationChangeSetup'
 export * from './mockContexts'
+export * from './mockWorker'
diff --git a/packages/rum/test/mockWorker.ts b/packages/rum-core/test/mockWorker.ts
similarity index 98%
rename from packages/rum/test/mockWorker.ts
rename to packages/rum-core/test/mockWorker.ts
index 9c94d94b09..71921133e3 100644
--- a/packages/rum/test/mockWorker.ts
+++ b/packages/rum-core/test/mockWorker.ts
@@ -1,6 +1,6 @@
 import type { DeflateWorker, DeflateWorkerAction, DeflateWorkerResponse } from '@datadog/browser-core'
+import { createNewEvent } from '@datadog/browser-core/test'
 import { string2buf } from '../../worker/src/domain/deflate'
-import { createNewEvent } from '../../core/test'
 
 type DeflateWorkerListener = (event: { data: DeflateWorkerResponse }) => void
 
diff --git a/packages/rum/src/boot/recorderApi.spec.ts b/packages/rum/src/boot/recorderApi.spec.ts
index 87a0e756ae..8fdf3d9366 100644
--- a/packages/rum/src/boot/recorderApi.spec.ts
+++ b/packages/rum/src/boot/recorderApi.spec.ts
@@ -1,8 +1,9 @@
 import type { DeflateEncoder, DeflateWorker, DeflateWorkerAction } from '@datadog/browser-core'
 import { BridgeCapability, PageExitReason, display, isIE } from '@datadog/browser-core'
-import type { RecorderApi, RumSessionManager } from '@datadog/browser-rum-core'
-import { LifeCycle, LifeCycleEventType } from '@datadog/browser-rum-core'
+import type { RecorderApi, RumSessionManager, CreateDeflateWorker } from '@datadog/browser-rum-core'
+import { LifeCycle, LifeCycleEventType, resetDeflateWorkerState } from '@datadog/browser-rum-core'
 import { mockEventBridge, registerCleanupTask } from '@datadog/browser-core/test'
+import { MockWorker } from '@datadog/browser-rum-core/test'
 import type { RumSessionManagerMock } from '../../../rum-core/test'
 import {
   createRumSessionManagerMock,
@@ -10,9 +11,6 @@ import {
   mockRumConfiguration,
   mockViewHistory,
 } from '../../../rum-core/test'
-import type { CreateDeflateWorker } from '../domain/deflate'
-import { MockWorker } from '../../test'
-import { resetDeflateWorkerState } from '../domain/deflate'
 import * as replayStats from '../domain/replayStats'
 import type { StartRecording } from './recorderApi'
 import { makeRecorderApi } from './recorderApi'
diff --git a/packages/rum/src/boot/recorderApi.ts b/packages/rum/src/boot/recorderApi.ts
index 2a330aad1b..d847ce082d 100644
--- a/packages/rum/src/boot/recorderApi.ts
+++ b/packages/rum/src/boot/recorderApi.ts
@@ -15,17 +15,18 @@ import type {
   RecorderApi,
   RumConfiguration,
   StartRecordingOptions,
+  CreateDeflateWorker,
 } from '@datadog/browser-rum-core'
-import { LifeCycleEventType, SessionReplayState } from '@datadog/browser-rum-core'
-import { getReplayStats as getReplayStatsImpl } from '../domain/replayStats'
-import { getSessionReplayLink } from '../domain/getSessionReplayLink'
-import type { CreateDeflateWorker } from '../domain/deflate'
 import {
+  LifeCycleEventType,
+  SessionReplayState,
   createDeflateEncoder,
   startDeflateWorker,
   DeflateWorkerStatus,
   getDeflateWorkerStatus,
-} from '../domain/deflate'
+} from '@datadog/browser-rum-core'
+import { getReplayStats as getReplayStatsImpl } from '../domain/replayStats'
+import { getSessionReplayLink } from '../domain/getSessionReplayLink'
 
 import type { startRecording } from './startRecording'
 import { isBrowserSupported } from './isBrowserSupported'
diff --git a/packages/rum/src/boot/startRecording.spec.ts b/packages/rum/src/boot/startRecording.spec.ts
index 5f3e6328a4..b5e603ee73 100644
--- a/packages/rum/src/boot/startRecording.spec.ts
+++ b/packages/rum/src/boot/startRecording.spec.ts
@@ -1,7 +1,14 @@
 import type { TimeStamp, HttpRequest } from '@datadog/browser-core'
 import { PageExitReason, DefaultPrivacyLevel, noop, isIE, DeflateEncoderStreamId } from '@datadog/browser-core'
 import type { ViewCreatedEvent } from '@datadog/browser-rum-core'
-import { LifeCycle, LifeCycleEventType, startViewHistory } from '@datadog/browser-rum-core'
+import {
+  createDeflateEncoder,
+  LifeCycle,
+  LifeCycleEventType,
+  resetDeflateWorkerState,
+  startDeflateWorker,
+  startViewHistory,
+} from '@datadog/browser-rum-core'
 import { collectAsyncCalls, createNewEvent, mockEventBridge, registerCleanupTask } from '@datadog/browser-core/test'
 import type { ViewEndedEvent } from 'packages/rum-core/src/domain/view/trackViews'
 import type { RumSessionManagerMock } from '../../../rum-core/test'
@@ -12,7 +19,6 @@ import { setSegmentBytesLimit } from '../domain/segmentCollection'
 
 import { RecordType } from '../types'
 import { resetReplayStats } from '../domain/replayStats'
-import { createDeflateEncoder, resetDeflateWorkerState, startDeflateWorker } from '../domain/deflate'
 import { startRecording } from './startRecording'
 
 const VIEW_TIMESTAMP = 1 as TimeStamp
diff --git a/packages/rum/src/domain/segmentCollection/segment.spec.ts b/packages/rum/src/domain/segmentCollection/segment.spec.ts
index 067a1c2002..f1615bde57 100644
--- a/packages/rum/src/domain/segmentCollection/segment.spec.ts
+++ b/packages/rum/src/domain/segmentCollection/segment.spec.ts
@@ -1,12 +1,11 @@
 import type { DeflateEncoder, TimeStamp } from '@datadog/browser-core'
 import { noop, setDebugMode, isIE, DeflateEncoderStreamId } from '@datadog/browser-core'
-import type { RumConfiguration } from '@datadog/browser-rum-core'
+import { createDeflateEncoder, type RumConfiguration } from '@datadog/browser-rum-core'
 import { registerCleanupTask } from '@datadog/browser-core/test'
-import { MockWorker } from '../../../test'
+import { MockWorker } from '@datadog/browser-rum-core/test'
 import type { CreationReason, BrowserRecord, SegmentContext, BrowserSegment, BrowserSegmentMetadata } from '../../types'
 import { RecordType } from '../../types'
 import { getReplayStats, resetReplayStats } from '../replayStats'
-import { createDeflateEncoder } from '../deflate'
 import type { AddRecordCallback, FlushCallback, Segment } from './segment'
 import { createSegment } from './segment'
 
diff --git a/packages/rum/src/domain/segmentCollection/segmentCollection.spec.ts b/packages/rum/src/domain/segmentCollection/segmentCollection.spec.ts
index 979354528b..eadd0e09ad 100644
--- a/packages/rum/src/domain/segmentCollection/segmentCollection.spec.ts
+++ b/packages/rum/src/domain/segmentCollection/segmentCollection.spec.ts
@@ -1,14 +1,13 @@
 import type { ClocksState, HttpRequest, TimeStamp } from '@datadog/browser-core'
 import { DeflateEncoderStreamId, PageExitReason, isIE } from '@datadog/browser-core'
 import type { ViewHistory, ViewHistoryEntry, RumConfiguration } from '@datadog/browser-rum-core'
-import { LifeCycle, LifeCycleEventType } from '@datadog/browser-rum-core'
+import { createDeflateEncoder, LifeCycle, LifeCycleEventType } from '@datadog/browser-rum-core'
 import type { Clock } from '@datadog/browser-core/test'
 import { mockClock, registerCleanupTask, restorePageVisibility } from '@datadog/browser-core/test'
-import { createRumSessionManagerMock } from '../../../../rum-core/test'
+import { createRumSessionManagerMock, MockWorker } from '../../../../rum-core/test'
 import type { BrowserRecord, SegmentContext } from '../../types'
 import { RecordType } from '../../types'
-import { MockWorker, readMetadataFromReplayPayload } from '../../../test'
-import { createDeflateEncoder } from '../deflate'
+import { readMetadataFromReplayPayload } from '../../../test'
 import {
   computeSegmentContext,
   doStartSegmentCollection,
diff --git a/packages/rum/src/entries/main.ts b/packages/rum/src/entries/main.ts
index 895cc7509e..bb20c0816a 100644
--- a/packages/rum/src/entries/main.ts
+++ b/packages/rum/src/entries/main.ts
@@ -1,11 +1,10 @@
 // Keep the following in sync with packages/rum-slim/src/entries/main.ts
 import { defineGlobal, getGlobalObject } from '@datadog/browser-core'
 import type { RumPublicApi } from '@datadog/browser-rum-core'
-import { makeRumPublicApi, startRum } from '@datadog/browser-rum-core'
+import { makeRumPublicApi, startRum, startDeflateWorker, createDeflateEncoder } from '@datadog/browser-rum-core'
 
 import { startRecording } from '../boot/startRecording'
 import { makeRecorderApi } from '../boot/recorderApi'
-import { createDeflateEncoder, startDeflateWorker } from '../domain/deflate'
 
 export {
   CommonProperties,
diff --git a/packages/rum/test/index.ts b/packages/rum/test/index.ts
index 227e480f65..4d47ce9e76 100644
--- a/packages/rum/test/index.ts
+++ b/packages/rum/test/index.ts
@@ -1,4 +1,3 @@
-export * from './mockWorker'
 export * from './recordsPerFullSnapshot'
 export * from './mutationPayloadValidator'
 export * from './nodes'