diff --git a/eng/pipelines/scripts/generate-project-list.ps1 b/eng/pipelines/scripts/generate-project-list.ps1
index a4432a8b3977..2208fd131056 100644
--- a/eng/pipelines/scripts/generate-project-list.ps1
+++ b/eng/pipelines/scripts/generate-project-list.ps1
@@ -4,6 +4,29 @@ $additionalModulesList = @()
 
 . "${PSScriptRoot}/../../common/scripts/common.ps1"
 
+# If ProjectListOverride is set (e.g., from matrix variables), use it directly
+# to avoid building unnecessary modules in jobs that only test a subset.
+# Do not honor ProjectListOverride for FromSource runs — FromSource builds use
+# ClientFromSourcePom.xml which builds all libraries and the project list must
+# be computed from the artifacts, not overridden.
+if ($env:PROJECTLISTOVERRIDE -and $env:PROJECTLISTOVERRIDE -notlike '*ProjectListOverride*') {
+  if ($env:TESTFROMSOURCE -eq 'true') {
+    Write-Host "Ignoring ProjectListOverride for FromSource run (TestFromSource=true)"
+  } else {
+    $projects = $env:PROJECTLISTOVERRIDE
+    Write-Host "Using ProjectListOverride = $projects"
+    Write-Host "##vso[task.setvariable variable=ProjectList;]$projects"
+    Write-Host "##vso[task.setvariable variable=ArtifactsList;]$projects"
+    Write-Host "##vso[task.setvariable variable=AdditionalModulesList;]"
+
+    $sha256 = new-object -TypeName System.Security.Cryptography.SHA256Managed
+    $utf8 = new-object -TypeName System.Text.UTF8Encoding
+    $projectListSha256 = [Convert]::ToBase64String($sha256.ComputeHash($utf8.GetBytes($projects)))
+    Write-Host "##vso[task.setvariable variable=ProjectListSha256;]$projectListSha256"
+    return
+  }
+}
+
 if ($env:ARTIFACTSJSON -and $env:ARTIFACTSJSON -notlike '*ArtifactsJson*') {
   $artifacts = $env:ARTIFACTSJSON | ConvertFrom-Json
   foreach ($artifact in $artifacts) {
diff --git a/eng/pipelines/templates/jobs/ci.tests.yml b/eng/pipelines/templates/jobs/ci.tests.yml
index 82d12ff45fdf..cdfac6273e60 100644
--- a/eng/pipelines/templates/jobs/ci.tests.yml
+++ b/eng/pipelines/templates/jobs/ci.tests.yml
@@ -40,6 +40,9 @@ parameters:
   - name: BuildParallelization
     type: string
     default: '2C'
+  - name: BuildOptions
+    type: string
+    default: ''
   - name: AdditionalLintingOptions
     type: string
     default: ''
@@ -145,6 +148,7 @@ jobs:
           TestOptions: ${{ parameters.TestOptions }}
           TestParallelization: ${{ parameters.TestParallelization }}
           BuildParallelization: ${{ parameters.BuildParallelization }}
+          BuildOptions: ${{ parameters.BuildOptions }}
           TestEnvVars: ${{ parameters.EnvVars }}
           VersionOverride: ${{ parameters.VersionOverride }}
 
diff --git a/eng/pipelines/templates/jobs/ci.yml b/eng/pipelines/templates/jobs/ci.yml
index 703c81308c01..95233db735c1 100644
--- a/eng/pipelines/templates/jobs/ci.yml
+++ b/eng/pipelines/templates/jobs/ci.yml
@@ -40,6 +40,9 @@ parameters:
   - name: BuildParallelization
     type: string
     default: '2C'
+  - name: BuildOptions
+    type: string
+    default: ''
   - name: TestGoals
     type: string
     default: $(TestGoals)
@@ -503,6 +506,7 @@ jobs:
         TestOptions: ${{ parameters.TestOptions }}
         TestParallelization: ${{ parameters.TestParallelization }}
         BuildParallelization: ${{ parameters.BuildParallelization }}
+        BuildOptions: ${{ parameters.BuildOptions }}
         AdditionalLintingOptions: ${{ parameters.AdditionalLintingOptions }}
         TimeoutInMinutes: ${{ parameters.TimeoutInMinutes }}
         EnvVars: ${{ parameters.EnvVars }}
diff --git a/eng/pipelines/templates/stages/cosmos-emulator-matrix-pr.json b/eng/pipelines/templates/stages/cosmos-emulator-matrix-pr.json
new file mode 100644
index 000000000000..94625e96ffdb
--- /dev/null
+++ b/eng/pipelines/templates/stages/cosmos-emulator-matrix-pr.json
@@ -0,0 +1,115 @@
+{
+  "displayNames": {
+    "clean verify": ""
+  },
+  "matrix": {
+    "Agent": {
+      "windows-2022": {
+        "OSVmImage": "env:WINDOWSVMIMAGE",
+        "Pool": "env:WINDOWSPOOL"
+      }
+    },
+    "TestGoals": "clean verify",
+    "EmulatorConfig": {
+      "Emulator Only Integration Tests Tcp - Java 8": {
+        "ProfileFlag": "-Pemulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
+      },
+      "Emulator Only Integration Tests Tcp - Java 17": {
+        "ProfileFlag": "-Pemulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Strong\"]",
+        "JavaTestVersion": "1.17",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
+      },
+      "Long Emulator Only Integration Tests Tcp - Java 8": {
+        "ProfileFlag": "-Plong-emulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
+      },
+      "Long Emulator Only Integration Tests Tcp - Java 17": {
+        "ProfileFlag": "-Plong-emulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Strong\"]",
+        "JavaTestVersion": "1.17",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
+      },
+      "Encryption Emulator Only Integration Tests": {
+        "ProfileFlag": "-Pencryption-integration",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-encryption,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
+      },
+      "Spark 3.3 Integration Tests targeting Cosmos Emulator - Java 8'": {
+        "ProfileFlag": "-Dspark-e2e_3-3",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-3_2-12"
+      },
+      "Spark 3.4 Integration Tests targeting Cosmos Emulator - Java 11'": {
+        "ProfileFlag": "-Dspark-e2e_3-4",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.11",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-4_2-12"
+      },
+      "Spark 3.5, Scala 2.12 Integration Tests targeting Cosmos Emulator - Java 17'": {
+        "ProfileFlag": "-Dspark-e2e_3-5_2-12",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.17",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-5,com.azure.cosmos.spark:azure-cosmos-spark_3-5_2-12"
+      },
+      "Spark 3.5, Scala 2.13 Integration Tests targeting Cosmos Emulator - Java 17'": {
+        "ProfileFlag": "-Dspark-e2e_3-5_2-13",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.17",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-5,com.azure.cosmos.spark:azure-cosmos-spark_3-5_2-13"
+      },
+      "Spark 4.0, Scala 2.13 Integration Tests targeting Cosmos Emulator - Java 21'": {
+        "ProfileFlag": "-Dspark-e2e_4-0_2-13",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.21",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_4-0_2-13"
+      },
+      "Kafka Integration Tests targeting Cosmos Emulator - Java 17": {
+        "ProfileFlag": "-Pkafka-emulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.17",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.kafka:azure-cosmos-kafka-connect"
+      }
+    }
+  }
+}
diff --git a/eng/pipelines/templates/stages/cosmos-emulator-matrix.json b/eng/pipelines/templates/stages/cosmos-emulator-matrix.json
index 2823975d5ea8..3347a308cc8f 100644
--- a/eng/pipelines/templates/stages/cosmos-emulator-matrix.json
+++ b/eng/pipelines/templates/stages/cosmos-emulator-matrix.json
@@ -4,121 +4,156 @@
   },
   "matrix": {
     "Agent": {
-      "windows-2022": { "OSVmImage": "env:WINDOWSVMIMAGE", "Pool": "env:WINDOWSPOOL" }
+      "windows-2022": {
+        "OSVmImage": "env:WINDOWSVMIMAGE",
+        "Pool": "env:WINDOWSPOOL"
+      }
     },
     "TestGoals": "clean verify",
     "EmulatorConfig": {
       "Emulator Only Integration Tests Tcp - Java 8": {
-          "ProfileFlag": "-Pemulator",
-          "PROTOCOLS": "[\"Tcp\"]",
-          "DESIRED_CONSISTENCIES": "[\"Session\"]",
-          "JavaTestVersion": "1.8",
-          "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "ProfileFlag": "-Pemulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
       },
       "Emulator Only Integration Tests Tcp - Java 17": {
         "ProfileFlag": "-Pemulator",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Strong\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
       },
       "Long Emulator Only Integration Tests Tcp - Java 8": {
-          "ProfileFlag": "-Plong-emulator",
-          "PROTOCOLS": "[\"Tcp\"]",
-          "DESIRED_CONSISTENCIES": "[\"Session\"]",
-          "JavaTestVersion": "1.8",
-          "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "ProfileFlag": "-Plong-emulator",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
       },
       "Long Emulator Only Integration Tests Tcp - Java 17": {
         "ProfileFlag": "-Plong-emulator",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Strong\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
       },
       "Encryption Emulator Only Integration Tests": {
-          "ProfileFlag": "-Pencryption-integration",
-          "PROTOCOLS": "[\"Tcp\"]",
-          "DESIRED_CONSISTENCIES": "[\"Session\"]",
-          "JavaTestVersion": "1.8",
-          "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "ProfileFlag": "-Pencryption-integration",
+        "PROTOCOLS": "[\"Tcp\"]",
+        "DESIRED_CONSISTENCIES": "[\"Session\"]",
+        "JavaTestVersion": "1.8",
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true -Dshade.skip=true -Dmaven.antrun.skip=true",
+        "BuildOptions": "-Dshade.skip=true -Dmaven.antrun.skip=true",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-encryption,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests"
       },
       "Spark 3.3 Integration Tests targeting Cosmos Emulator - Java 8'": {
         "ProfileFlag": "-Dspark-e2e_3-3",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.8",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-3_2-12"
       },
       "Spark 3.3 Integration Tests targeting Cosmos Emulator - Java 11'": {
         "ProfileFlag": "-Dspark-e2e_3-3",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.11",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-3_2-12"
       },
       "Spark 3.4 Integration Tests targeting Cosmos Emulator - Java 8'": {
         "ProfileFlag": "-Dspark-e2e_3-4",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.8",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-4_2-12"
       },
       "Spark 3.4 Integration Tests targeting Cosmos Emulator - Java 11'": {
         "ProfileFlag": "-Dspark-e2e_3-4",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.11",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-4_2-12"
       },
       "Spark 3.5, Scala 2.12 Integration Tests targeting Cosmos Emulator - Java 8'": {
         "ProfileFlag": "-Dspark-e2e_3-5_2-12",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.8",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-5,com.azure.cosmos.spark:azure-cosmos-spark_3-5_2-12"
       },
       "Spark 3.5, Scala 2.12 Integration Tests targeting Cosmos Emulator - Java 17'": {
         "ProfileFlag": "-Dspark-e2e_3-5_2-12",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-5,com.azure.cosmos.spark:azure-cosmos-spark_3-5_2-12"
       },
       "Spark 3.5, Scala 2.13 Integration Tests targeting Cosmos Emulator - Java 17'": {
         "ProfileFlag": "-Dspark-e2e_3-5_2-13",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_3-5,com.azure.cosmos.spark:azure-cosmos-spark_3-5_2-13"
       },
       "Spark 4.0, Scala 2.13 Integration Tests targeting Cosmos Emulator - Java 17'": {
         "ProfileFlag": "-Dspark-e2e_4-0_2-13",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_4-0_2-13"
       },
       "Spark 4.0, Scala 2.13 Integration Tests targeting Cosmos Emulator - Java 21'": {
         "ProfileFlag": "-Dspark-e2e_4-0_2-13",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.21",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -Dhadoop.home.dir=D:/Hadoop -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.spark:azure-cosmos-spark_3,com.azure.cosmos.spark:azure-cosmos-spark_4-0_2-13"
       },
       "Kafka Integration Tests targeting Cosmos Emulator - Java 11": {
         "ProfileFlag": "-Pkafka-emulator",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.11",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.kafka:azure-cosmos-kafka-connect"
       },
       "Kafka Integration Tests targeting Cosmos Emulator - Java 17": {
         "ProfileFlag": "-Pkafka-emulator",
         "PROTOCOLS": "[\"Tcp\"]",
         "DESIRED_CONSISTENCIES": "[\"Session\"]",
         "JavaTestVersion": "1.17",
-        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true"
+        "AdditionalArgs": "-DACCOUNT_HOST=https://localhost:8081/ -DCOSMOS.AZURE_COSMOS_DISABLE_NON_STREAMING_ORDER_BY=true",
+        "BuildOptions": "",
+        "ProjectListOverride": "com.azure:azure-cosmos,com.azure:azure-cosmos-test,com.azure:azure-cosmos-tests,com.azure.cosmos.kafka:azure-cosmos-kafka-connect"
       }
     }
   }
diff --git a/eng/pipelines/templates/stages/cosmos-sdk-client.yml b/eng/pipelines/templates/stages/cosmos-sdk-client.yml
index 9d2977f14107..ea9b86583e14 100644
--- a/eng/pipelines/templates/stages/cosmos-sdk-client.yml
+++ b/eng/pipelines/templates/stages/cosmos-sdk-client.yml
@@ -61,7 +61,8 @@ extends:
             MatrixReplace:
               - AZURE_TEST.*=.*/
               - .*Version=1.2(1|5)/1.17
-            BuildParallelization: 1
+            BuildParallelization: 2
+            BuildOptions: '-Dshade.skip=true -Dmaven.antrun.skip=true'
             TestOptions: '-Punit'
 
       - stage: TestEmulator
@@ -80,18 +81,21 @@ extends:
             JobTemplatePath: /eng/pipelines/templates/jobs/live.tests.yml
             MatrixConfigs:
               - Name: Cosmos_emulator_integration
-                Path: eng/pipelines/templates/stages/cosmos-emulator-matrix.json
+                # Use reduced matrix for PRs (11 jobs) vs full matrix for CI/main (16 jobs)
+                ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+                  Path: eng/pipelines/templates/stages/cosmos-emulator-matrix-pr.json
+                ${{ else }}:
+                  Path: eng/pipelines/templates/stages/cosmos-emulator-matrix.json
                 Selection: all
                 GenerateVMJobs: true
             MatrixFilters:
               - ${{ parameters.LanguageFilter }}
               - ${{ parameters.MatrixFilters }}
             AdditionalParameters:
-              BuildParallelization: 1
+              BuildParallelization: 2
+              BuildOptions: '$(BuildOptions)'
               DisableAzureResourceCreation: true
               ServiceDirectory: cosmos
-              # Increased timeout to 120 because of cosmos emulator taking 25-30 mins to download emulator
-              # Issue filed to improve download speed: https://github.com/Azure/azure-sdk-for-java/issues/12970
               TimeoutInMinutes: 120
               TestOptions: '$(ProfileFlag) $(AdditionalArgs)'
               PreSteps:
@@ -179,7 +183,7 @@ extends:
                     - ${{ parameters.LanguageFilter }}
                     - ${{ parameters.MatrixFilters }}
                   AdditionalParameters:
-                    BuildParallelization: 1
+                    BuildParallelization: 2
                     DisableAzureResourceCreation: true
                     ServiceDirectory: cosmos
                     TimeoutInMinutes: 120
diff --git a/sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/TestSuiteBase.java b/sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/TestSuiteBase.java
index af894f913052..2e0beac7e0f0 100644
--- a/sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/TestSuiteBase.java
+++ b/sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/TestSuiteBase.java
@@ -1,5 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
+
 package com.azure.cosmos.rx;
 
 import com.azure.core.credential.AzureKeyCredential;