diff --git a/Datadog/Example/ExampleAppDelegate.swift b/Datadog/Example/ExampleAppDelegate.swift
index 1cc4d4c852..db54a0571b 100644
--- a/Datadog/Example/ExampleAppDelegate.swift
+++ b/Datadog/Example/ExampleAppDelegate.swift
@@ -33,7 +33,7 @@ class ExampleAppDelegate: UIResponder, UIApplicationDelegate {
         )
 
         // Set user information
-        Datadog.setUserInfo(id: "abcd-1234", name: "foo", email: "foo@example.com")
+        Datadog.setUserInfo(id: "abcd-1234", name: "foo", email: "foo@example.com", extraInfo: ["key-extraUserInfo": "value-extraUserInfo"])
 
         // Create Logger
         logger = Logger.builder
diff --git a/Sources/Datadog/Core/Attributes/UserInfoProvider.swift b/Sources/Datadog/Core/Attributes/UserInfoProvider.swift
index 02a84e0c57..93e2bfed47 100644
--- a/Sources/Datadog/Core/Attributes/UserInfoProvider.swift
+++ b/Sources/Datadog/Core/Attributes/UserInfoProvider.swift
@@ -12,11 +12,26 @@ internal class UserInfoProvider {
     /// `UserInfo` can be mutated by any user thread with `Datadog.setUserInfo(id:name:email:)` - at the same
     /// time it might be accessed by different queues running in the SDK.
     private let queue = DispatchQueue(label: "com.datadoghq.user-info-provider", qos: .userInteractive)
-    private var current = UserInfo(id: nil, name: nil, email: nil)
+    private var _value = UserInfo(id: nil, name: nil, email: nil)
+    private var _extraInfo = [AttributeKey: AttributeValue]()
 
     var value: UserInfo {
-        set { queue.async { self.current = newValue } }
-        get { queue.sync { self.current } }
+        set { queue.async { self._value = newValue } }
+        get { queue.sync { self._value } }
+    }
+
+    var extraInfo: [AttributeKey: AttributeValue] {
+        set {
+            queue.async {
+                var processedInfo = newValue
+                newValue.keys.forEach {
+                    let value = processedInfo.removeValue(forKey: $0)
+                    processedInfo["usr.\($0)"] = value
+                }
+                self._extraInfo = processedInfo
+            }
+        }
+        get { queue.sync { self._extraInfo } }
     }
 }
 
diff --git a/Sources/Datadog/Datadog.swift b/Sources/Datadog/Datadog.swift
index 0bf15a1193..331de6e5de 100644
--- a/Sources/Datadog/Datadog.swift
+++ b/Sources/Datadog/Datadog.swift
@@ -78,9 +78,11 @@ public class Datadog {
     public static func setUserInfo(
         id: String? = nil,
         name: String? = nil,
-        email: String? = nil
+        email: String? = nil,
+        extraInfo: [AttributeKey: AttributeValue] = [:]
     ) {
         instance?.userInfoProvider.value = UserInfo(id: id, name: name, email: email)
+        instance?.userInfoProvider.extraInfo = extraInfo
     }
 
     // MARK: - Internal
diff --git a/Sources/Datadog/Logging/Log/LogBuilder.swift b/Sources/Datadog/Logging/Log/LogBuilder.swift
index 9b63c7e1be..ed53af42a7 100644
--- a/Sources/Datadog/Logging/Log/LogBuilder.swift
+++ b/Sources/Datadog/Logging/Log/LogBuilder.swift
@@ -24,6 +24,9 @@ internal struct LogBuilder {
     let carrierInfoProvider: CarrierInfoProviderType?
 
     func createLogWith(level: LogLevel, message: String, date: Date, attributes: LogAttributes, tags: Set<String>) -> Log {
+        let extraUserInfo = userInfoProvider.extraInfo
+        var mergedAttributes = attributes
+        mergedAttributes.userAttributes.merge(extraUserInfo) { userAttr, _ in userAttr }
         return Log(
             date: date,
             status: logStatus(for: level),
@@ -37,7 +40,7 @@ internal struct LogBuilder {
             userInfo: userInfoProvider.value,
             networkConnectionInfo: networkConnectionInfoProvider?.current,
             mobileCarrierInfo: carrierInfoProvider?.current,
-            attributes: attributes,
+            attributes: mergedAttributes,
             tags: !tags.isEmpty ? Array(tags) : nil
         )
     }
diff --git a/Sources/Datadog/Logging/LogOutputs/LogOutput.swift b/Sources/Datadog/Logging/LogOutputs/LogOutput.swift
index 107cbb20b5..897eb28e84 100644
--- a/Sources/Datadog/Logging/LogOutputs/LogOutput.swift
+++ b/Sources/Datadog/Logging/LogOutputs/LogOutput.swift
@@ -8,7 +8,7 @@ import Foundation
 
 internal struct LogAttributes {
     /// Log attributes received from the user. They are subject for sanitization.
-    let userAttributes: [String: Encodable]
+    var userAttributes: [String: Encodable]
     /// Log attributes added internally by the SDK. They are not a subject for sanitization.
     let internalAttributes: [String: Encodable]?
 }
diff --git a/Sources/Datadog/RUM/RUMEvent/RUMEventBuilder.swift b/Sources/Datadog/RUM/RUMEvent/RUMEventBuilder.swift
index e2ba7c2e6f..ebc4732652 100644
--- a/Sources/Datadog/RUM/RUMEvent/RUMEventBuilder.swift
+++ b/Sources/Datadog/RUM/RUMEvent/RUMEventBuilder.swift
@@ -6,8 +6,16 @@
 
 import Foundation
 
-internal struct RUMEventBuilder {
+internal class RUMEventBuilder {
+    let userInfoProvider: UserInfoProvider
+
+    init(userInfoProvider: UserInfoProvider) {
+        self.userInfoProvider = userInfoProvider
+    }
+
     func createRUMEvent<DM: RUMDataModel>(with model: DM, attributes: [String: Encodable]) -> RUMEvent<DM> {
-        return RUMEvent(model: model, attributes: attributes)
+        var mergedAttributes = attributes
+        mergedAttributes.merge(userInfoProvider.extraInfo) { userAttr, _ in userAttr }
+        return RUMEvent(model: model, attributes: mergedAttributes)
     }
 }
diff --git a/Sources/Datadog/RUMMonitor.swift b/Sources/Datadog/RUMMonitor.swift
index be2a150930..629105ad4d 100644
--- a/Sources/Datadog/RUMMonitor.swift
+++ b/Sources/Datadog/RUMMonitor.swift
@@ -182,7 +182,7 @@ public class RUMMonitor: DDRUMMonitor, RUMCommandSubscriber {
                         networkConnectionInfoProvider: rumFeature.networkConnectionInfoProvider,
                         carrierInfoProvider: rumFeature.carrierInfoProvider
                     ),
-                    eventBuilder: RUMEventBuilder(),
+                    eventBuilder: RUMEventBuilder(userInfoProvider: rumFeature.userInfoProvider),
                     eventOutput: RUMEventFileOutput(
                         fileWriter: rumFeature.storage.writer
                     ),
diff --git a/Sources/Datadog/Tracing/Span/SpanBuilder.swift b/Sources/Datadog/Tracing/Span/SpanBuilder.swift
index 36d4f9a1c0..e9b41ccd0a 100644
--- a/Sources/Datadog/Tracing/Span/SpanBuilder.swift
+++ b/Sources/Datadog/Tracing/Span/SpanBuilder.swift
@@ -27,7 +27,10 @@ internal struct SpanBuilder {
     func createSpan(from ddspan: DDSpan, finishTime: Date) -> Span {
         let tagsReducer = SpanTagsReducer(spanTags: ddspan.tags, logFields: ddspan.logFields)
 
-        var jsonStringEncodedTags: [String: JSONStringEncodableValue] = [:]
+        var jsonStringEncodedTags: [String: JSONStringEncodableValue]
+        jsonStringEncodedTags = userInfoProvider.extraInfo.compactMapValues {
+            JSONStringEncodableValue($0, encodedUsing: tagsJSONEncoder)
+        }
 
         // First, add baggage items as tags...
         for (itemKey, itemValue) in ddspan.ddContext.baggageItems.all {
diff --git a/Tests/DatadogTests/Datadog/Mocks/RUMFeatureMocks.swift b/Tests/DatadogTests/Datadog/Mocks/RUMFeatureMocks.swift
index 50c3bd7587..19decf79fe 100644
--- a/Tests/DatadogTests/Datadog/Mocks/RUMFeatureMocks.swift
+++ b/Tests/DatadogTests/Datadog/Mocks/RUMFeatureMocks.swift
@@ -80,7 +80,7 @@ struct RUMDataModelMock: RUMDataModel, Equatable {
 
 extension RUMEventBuilder {
     static func mockAny() -> RUMEventBuilder {
-        return RUMEventBuilder()
+        return RUMEventBuilder(userInfoProvider: UserInfoProvider.mockAny())
     }
 }
 
@@ -323,7 +323,7 @@ extension RUMScopeDependencies {
             networkConnectionInfoProvider: NetworkConnectionInfoProviderMock(networkConnectionInfo: nil),
             carrierInfoProvider: CarrierInfoProviderMock(carrierInfo: nil)
         ),
-        eventBuilder: RUMEventBuilder = RUMEventBuilder(),
+        eventBuilder: RUMEventBuilder = RUMEventBuilder(userInfoProvider: UserInfoProvider.mockAny()),
         eventOutput: RUMEventOutput = RUMEventOutputMock(),
         rumUUIDGenerator: RUMUUIDGenerator = DefaultRUMUUIDGenerator()
     ) -> RUMScopeDependencies {
diff --git a/Tests/DatadogTests/Datadog/RUM/RUMEvent/RUMEventBuilderTests.swift b/Tests/DatadogTests/Datadog/RUM/RUMEvent/RUMEventBuilderTests.swift
index 2de99c5443..37fb6d3883 100644
--- a/Tests/DatadogTests/Datadog/RUM/RUMEvent/RUMEventBuilderTests.swift
+++ b/Tests/DatadogTests/Datadog/RUM/RUMEvent/RUMEventBuilderTests.swift
@@ -9,7 +9,7 @@ import XCTest
 
 class RUMEventBuilderTests: XCTestCase {
     func testItBuildsRUMEvent() {
-        let builder = RUMEventBuilder()
+        let builder = RUMEventBuilder(userInfoProvider: UserInfoProvider.mockAny())
         let event = builder.createRUMEvent(
             with: RUMDataModelMock(attribute: "foo"),
             attributes: ["foo": "bar", "fizz": "buzz"]
diff --git a/Tests/DatadogTests/Datadog/RUM/RUMEventOutputs/RUMEventFileOutputTests.swift b/Tests/DatadogTests/Datadog/RUM/RUMEventOutputs/RUMEventFileOutputTests.swift
index 91c506a0b7..dce443e5e7 100644
--- a/Tests/DatadogTests/Datadog/RUM/RUMEventOutputs/RUMEventFileOutputTests.swift
+++ b/Tests/DatadogTests/Datadog/RUM/RUMEventOutputs/RUMEventFileOutputTests.swift
@@ -21,7 +21,7 @@ class RUMEventFileOutputTests: XCTestCase {
     func testItWritesRUMEventToFileAsJSON() throws {
         let fileCreationDateProvider = RelativeDateProvider(startingFrom: .mockDecember15th2019At10AMUTC())
         let queue = DispatchQueue(label: "com.datadohq.testItWritesRUMEventToFileAsJSON")
-        let builder = RUMEventBuilder()
+        let builder = RUMEventBuilder(userInfoProvider: UserInfoProvider.mockAny())
         let output = RUMEventFileOutput(
             fileWriter: FileWriter(
                 dataFormat: RUMFeature.dataFormat,