diff --git a/.idea/modules.xml b/.idea/modules.xml
index ad8033f3bf61..656ff4df25c9 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -843,7 +843,6 @@
       <module fileurl="file://$PROJECT_DIR$/platform/analysis-api/intellij.platform.analysis.iml" filepath="$PROJECT_DIR$/platform/analysis-api/intellij.platform.analysis.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/analysis-impl/intellij.platform.analysis.impl.iml" filepath="$PROJECT_DIR$/platform/analysis-impl/intellij.platform.analysis.impl.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/backend/observation/intellij.platform.backend.observation.iml" filepath="$PROJECT_DIR$/platform/backend/observation/intellij.platform.backend.observation.iml" />
-      <module fileurl="file://$PROJECT_DIR$/platform/backend/observation-impl/intellij.platform.backend.observation.impl.iml" filepath="$PROJECT_DIR$/platform/backend/observation-impl/intellij.platform.backend.observation.impl.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/backend/workspace/intellij.platform.backend.workspace.iml" filepath="$PROJECT_DIR$/platform/backend/workspace/intellij.platform.backend.workspace.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/platform-tests/benchmarks/intellij.platform.benchmarks.iml" filepath="$PROJECT_DIR$/platform/platform-tests/benchmarks/intellij.platform.benchmarks.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/boot/intellij.platform.boot.iml" filepath="$PROJECT_DIR$/platform/boot/intellij.platform.boot.iml" />
diff --git a/platform/backend/observation-impl/intellij.platform.backend.observation.impl.iml b/platform/backend/observation-impl/intellij.platform.backend.observation.impl.iml
deleted file mode 100644
index e03ac9dd7c5a..000000000000
--- a/platform/backend/observation-impl/intellij.platform.backend.observation.impl.iml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="module" module-name="intellij.platform.core" />
-    <orderEntry type="library" name="kotlin-stdlib" level="project" />
-    <orderEntry type="module" module-name="intellij.platform.backend.observation" />
-    <orderEntry type="module" module-name="intellij.platform.ide.impl" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/platform/backend/observation-impl/src/com/intellij/platform/backend/observation/impl/Observation.kt b/platform/backend/observation/src/com/intellij/platform/backend/observation/Observation.kt
similarity index 93%
rename from platform/backend/observation-impl/src/com/intellij/platform/backend/observation/impl/Observation.kt
rename to platform/backend/observation/src/com/intellij/platform/backend/observation/Observation.kt
index fc47e5b00f74..fa780d6056e8 100644
--- a/platform/backend/observation-impl/src/com/intellij/platform/backend/observation/impl/Observation.kt
+++ b/platform/backend/observation/src/com/intellij/platform/backend/observation/Observation.kt
@@ -1,8 +1,7 @@
 // Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
-package com.intellij.platform.backend.observation.impl
+package com.intellij.platform.backend.observation
 
 import com.intellij.openapi.project.Project
-import com.intellij.platform.backend.observation.ActivityInProgressWitness
 
 object Observation {
 
diff --git a/platform/platform-tests/intellij.platform.tests.iml b/platform/platform-tests/intellij.platform.tests.iml
index c67b6480fcea..a9c94f016aad 100644
--- a/platform/platform-tests/intellij.platform.tests.iml
+++ b/platform/platform-tests/intellij.platform.tests.iml
@@ -84,6 +84,5 @@
     <orderEntry type="module" module-name="intellij.tools.ide.metrics.benchmark" scope="TEST" />
     <orderEntry type="module" module-name="intellij.platform.instanceContainer" scope="TEST" />
     <orderEntry type="module" module-name="intellij.platform.backend.observation" scope="TEST" />
-    <orderEntry type="module" module-name="intellij.platform.backend.observation.impl" scope="TEST" />
   </component>
 </module>
\ No newline at end of file
diff --git a/platform/platform-tests/testSrc/com/intellij/util/ActivityInProgressServiceTest.kt b/platform/platform-tests/testSrc/com/intellij/util/ActivityInProgressServiceTest.kt
index 693cebec24d2..6ae2af6f4cc1 100644
--- a/platform/platform-tests/testSrc/com/intellij/util/ActivityInProgressServiceTest.kt
+++ b/platform/platform-tests/testSrc/com/intellij/util/ActivityInProgressServiceTest.kt
@@ -4,7 +4,7 @@ package com.intellij.util
 import com.intellij.openapi.project.Project
 import com.intellij.platform.backend.observation.ActivityInProgressWitness
 import com.intellij.platform.backend.observation.MarkupBasedActivityInProgressWitness
-import com.intellij.platform.backend.observation.impl.Observation
+import com.intellij.platform.backend.observation.Observation
 import com.intellij.platform.backend.observation.trackActivity
 import com.intellij.testFramework.ApplicationRule
 import com.intellij.testFramework.ExtensionTestUtil
diff --git a/platform/warmup/intellij.platform.warmup.iml b/platform/warmup/intellij.platform.warmup.iml
index 8d1f6b8c5ff2..fe107866a54d 100644
--- a/platform/warmup/intellij.platform.warmup.iml
+++ b/platform/warmup/intellij.platform.warmup.iml
@@ -15,6 +15,6 @@
     <orderEntry type="module" module-name="intellij.platform.ide" />
     <orderEntry type="library" name="kotlin-stdlib" level="project" />
     <orderEntry type="library" name="kotlinx-coroutines-core" level="project" />
-    <orderEntry type="module" module-name="intellij.platform.backend.observation.impl" />
+    <orderEntry type="module" module-name="intellij.platform.backend.observation" />
   </component>
 </module>
\ No newline at end of file
diff --git a/platform/warmup/src/com/intellij/warmup/util/ProjectUtil.kt b/platform/warmup/src/com/intellij/warmup/util/ProjectUtil.kt
index ef2f75d729d2..cda521ecc64c 100644
--- a/platform/warmup/src/com/intellij/warmup/util/ProjectUtil.kt
+++ b/platform/warmup/src/com/intellij/warmup/util/ProjectUtil.kt
@@ -22,7 +22,7 @@ import com.intellij.openapi.roots.ProjectRootManager
 import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.vfs.VfsUtil
 import com.intellij.openapi.vfs.VirtualFileManager
-import com.intellij.platform.backend.observation.impl.Observation
+import com.intellij.platform.backend.observation.Observation
 import com.intellij.platform.util.progress.durationStep
 import com.intellij.util.asSafely
 import com.intellij.util.indexing.FileBasedIndex