diff --git a/README.md b/README.md
index 95fd4ccd..84bb2204 100644
--- a/README.md
+++ b/README.md
@@ -125,6 +125,7 @@ The configuration follows this JSON schema:
 | appMonitorId | String | Yes | Unique identifier for the RUM App Monitor |
 | overrideEndpoint | Object | No | Optional endpoint overrides for the RUM service |
 | debug | Boolean | No | Flag to enable debug logging (defaults to false) |
+| alias | String | No | Adds an alias to all requests. It will be compared to the rum:alias service context key in the resource based policy attached to a RUM app monitor |
 
 #### ApplicationConfig
 
diff --git a/Sources/AwsOpenTelemetryCore/AwsOpenTelemetryRumBuilder.swift b/Sources/AwsOpenTelemetryCore/AwsOpenTelemetryRumBuilder.swift
index bb3ea086..1289fb50 100644
--- a/Sources/AwsOpenTelemetryCore/AwsOpenTelemetryRumBuilder.swift
+++ b/Sources/AwsOpenTelemetryCore/AwsOpenTelemetryRumBuilder.swift
@@ -212,11 +212,15 @@ public class AwsOpenTelemetryRumBuilder {
    * @return A resource with AWS RUM attributes
    */
   private static func buildResource(config: AwsOpenTelemetryConfig) -> Resource {
-    let rumResourceAttributes: [String: String] = [
+    var rumResourceAttributes: [String: String] = [
       AwsRumConstants.AWS_REGION: config.rum.region,
       AwsRumConstants.RUM_APP_MONITOR_ID: config.rum.appMonitorId
     ]
 
+    if config.rum.alias?.isEmpty == false {
+      rumResourceAttributes[AwsRumConstants.RUM_ALIAS] = config.rum.alias!
+    }
+
     let resource = DefaultResources().get()
       .merging(other: Resource(attributes: buildAttributeMap(rumResourceAttributes)))
 
diff --git a/Sources/AwsOpenTelemetryCore/AwsRumConstants.swift b/Sources/AwsOpenTelemetryCore/AwsRumConstants.swift
index 0d33edf7..b6a4602e 100644
--- a/Sources/AwsOpenTelemetryCore/AwsRumConstants.swift
+++ b/Sources/AwsOpenTelemetryCore/AwsRumConstants.swift
@@ -27,4 +27,7 @@ public enum AwsRumConstants {
 
   /// Attribute key for the RUM App Monitor ID
   public static let RUM_APP_MONITOR_ID = "awsRumAppMonitorId"
+
+  /// Attribute key for the RUM alias
+  public static let RUM_ALIAS = "awsRumAlias"
 }
diff --git a/Sources/AwsOpenTelemetryCore/Configuration/AwsOpenTelemetryConfig.swift b/Sources/AwsOpenTelemetryCore/Configuration/AwsOpenTelemetryConfig.swift
index 83b5ea4c..48fe432d 100644
--- a/Sources/AwsOpenTelemetryCore/Configuration/AwsOpenTelemetryConfig.swift
+++ b/Sources/AwsOpenTelemetryCore/Configuration/AwsOpenTelemetryConfig.swift
@@ -67,6 +67,10 @@ import Foundation
   /// Flag to enable debug logging for SDK integration
   public var debug: Bool?
 
+  /// Optional alias to add to all requests to compare against the rum:alias
+  ///  in appmonitors with resource based policies
+  public var alias: String?
+
   /**
    * Initializes a new RUM configuration instance.
    *
@@ -75,11 +79,12 @@ import Foundation
    * @param overrideEndpoint Optional endpoint overrides for the RUM service
    * @param debug Flag to enable debug logging (defaults to false)
    */
-  @objc public init(region: String, appMonitorId: String, overrideEndpoint: EndpointOverrides? = nil, debug: Bool = false) {
+  @objc public init(region: String, appMonitorId: String, overrideEndpoint: EndpointOverrides? = nil, debug: Bool = false, alias: String? = nil) {
     self.region = region
     self.appMonitorId = appMonitorId
     self.overrideEndpoint = overrideEndpoint
     self.debug = debug
+    self.alias = alias
     super.init()
   }
 }
diff --git a/Tests/AwsOpenTelemetryTests/Configuration/AwsOpenTelemetryConfigTests.swift b/Tests/AwsOpenTelemetryTests/Configuration/AwsOpenTelemetryConfigTests.swift
index b0e5da5d..8a1b0e89 100644
--- a/Tests/AwsOpenTelemetryTests/Configuration/AwsOpenTelemetryConfigTests.swift
+++ b/Tests/AwsOpenTelemetryTests/Configuration/AwsOpenTelemetryConfigTests.swift
@@ -12,6 +12,7 @@ final class AwsOpenTelemetryConfigTests: XCTestCase {
   let tracesOnlyEndpoint = "https://traces-only.example.com"
   let debug = true
   let defaultVersion = "1.0.0"
+  let alias = "test-alias"
 
   func testConfigInitialization() {
     // Test basic initialization
@@ -25,6 +26,7 @@ final class AwsOpenTelemetryConfigTests: XCTestCase {
     XCTAssertEqual(config.rum.region, region)
     XCTAssertEqual(config.rum.appMonitorId, appMonitorId)
     XCTAssertNil(config.rum.overrideEndpoint)
+    XCTAssertNil(config.rum.alias)
     XCTAssertEqual(config.rum.debug, false)
     XCTAssertEqual(config.application.applicationVersion, appVersion)
   }
@@ -42,7 +44,8 @@ final class AwsOpenTelemetryConfigTests: XCTestCase {
         region: region,
         appMonitorId: appMonitorId,
         overrideEndpoint: endpointOverrides,
-        debug: debug
+        debug: debug,
+        alias: alias
       ),
       application: ApplicationConfig(applicationVersion: appVersion)
     )
@@ -51,8 +54,10 @@ final class AwsOpenTelemetryConfigTests: XCTestCase {
     XCTAssertEqual(config.rum.region, region)
     XCTAssertEqual(config.rum.appMonitorId, appMonitorId)
     XCTAssertNotNil(config.rum.overrideEndpoint)
+    XCTAssertNotNil(config.rum.alias)
     XCTAssertEqual(config.rum.overrideEndpoint?.logs, logsEndpoint)
     XCTAssertEqual(config.rum.overrideEndpoint?.traces, tracesEndpoint)
+    XCTAssertEqual(config.rum.alias, alias)
     XCTAssertEqual(config.rum.debug, debug)
     XCTAssertEqual(config.application.applicationVersion, appVersion)
   }
diff --git a/Tests/AwsOpenTelemetryTests/Configuration/AwsRumConfigReaderTests.swift b/Tests/AwsOpenTelemetryTests/Configuration/AwsRumConfigReaderTests.swift
index 4d130680..0eba376f 100644
--- a/Tests/AwsOpenTelemetryTests/Configuration/AwsRumConfigReaderTests.swift
+++ b/Tests/AwsOpenTelemetryTests/Configuration/AwsRumConfigReaderTests.swift
@@ -9,6 +9,7 @@ final class AwsRumConfigReaderTests: XCTestCase {
   let appVersion = "1.2.3"
   let logsEndpoint = "https://logs.example.com"
   let tracesEndpoint = "https://traces.example.com"
+  let alias = "test-alias"
 
   func testParseValidConfig() throws {
     // Create a valid JSON configuration
@@ -68,6 +69,31 @@ final class AwsRumConfigReaderTests: XCTestCase {
     XCTAssertEqual(config.rum.overrideEndpoint?.traces, tracesEndpoint)
   }
 
+  func testParseConfigWithAlias() throws {
+    // Create a valid JSON configuration
+    let jsonString = """
+    {
+        "version": "\(version)",
+        "rum": {
+            "region": "\(region)",
+            "appMonitorId": "\(appMonitorId)",
+            "alias": "\(alias)"
+        },
+        "application": {
+            "applicationVersion": "\(appVersion)"
+        }
+    }
+    """
+
+    let data = jsonString.data(using: .utf8)!
+
+    // Parse the configuration
+    let config = try AwsRumConfigReader.parseConfig(from: data)
+
+    // Verify the alias
+    XCTAssertEqual(config.rum.alias, alias)
+  }
+
   func testParseInvalidJson() {
     // Define test value
     let invalidJson = "{ this is not valid JSON }"