diff --git a/MIGRATION_GUIDE.md b/MIGRATION_GUIDE.md
index 88a51e8608..558188ae1b 100644
--- a/MIGRATION_GUIDE.md
+++ b/MIGRATION_GUIDE.md
@@ -93,6 +93,18 @@ Looking to upgrade from Sentry SDK 2.x to 3.x? Here's a comprehensive list of wh
 
   Note that `rq.job.args`, `rq.job.kwargs`, and `rq.job.func` are serialized and not the actual objects on the job.
 
+- If you're using the AWS Lambda integration, the `sampling_context` argument of `traces_sampler` doesn't contain the `aws_event` and `aws_context` objects anymore. Instead, the following, if available, is accessible:
+
+  | AWS property                                | Sampling context key(s) |
+  | ------------------------------------------- | ----------------------- |
+  | `aws_event["httpMethod"]`                   | `http.request.method`   |
+  | `aws_event["queryStringParameters"]`        | `url.query`             |
+  | `aws_event["path"]`                         | `url.path`              |
+  | full URL                                    | `url.full`              |
+  | `aws_event["headers"]["X-Forwarded-Proto"]` | `network.protocol.name` |
+  | `aws_event["headers"]["Host"]`              | `server.address`        |
+  | `aws_context["function_name"]`              | `faas.name`             |
+
 ### Removed
 
 - Spans no longer have a `description`. Use `name` instead.
diff --git a/sentry_sdk/integrations/aws_lambda.py b/sentry_sdk/integrations/aws_lambda.py
index d91d3d2f68..011c9eea87 100644
--- a/sentry_sdk/integrations/aws_lambda.py
+++ b/sentry_sdk/integrations/aws_lambda.py
@@ -463,7 +463,7 @@ def _event_from_error_json(error_json):
 EVENT_TO_ATTRIBUTES = {
     "httpMethod": "http.request.method",
     "queryStringParameters": "url.query",
-    # url
+    "path": "url.path",
     # headers
 }
 
@@ -476,11 +476,23 @@ def _prepopulate_attributes(aws_event, aws_context):
     attributes = {}
 
     for prop, attr in EVENT_TO_ATTRIBUTES.items():
-        if getattr(aws_event, prop, None) is not None:
-            attributes[attr] = getattr(aws_event, prop)
+        if aws_event.get(prop) is not None:
+            attributes[attr] = aws_event[prop]
 
     for prop, attr in CONTEXT_TO_ATTRIBUTES.items():
-        if getattr(aws_context, prop, None) is not None:
-            attributes[attr] = getattr(aws_context, prop)
+        if aws_context.get(prop) is not None:
+            attributes[attr] = aws_context.get(prop)
+
+    url = _get_url(aws_event, aws_context)
+    if url:
+        if aws_event.get("queryStringParameters"):
+            url += f"?{aws_event['queryStringParameters']}"
+        attributes["url.full"] = url
+
+    headers = aws_event.get("headers") or {}
+    if headers.get("X-Forwarded-Proto"):
+        attributes["network.protocol.name"] = headers["X-Forwarded-Proto"]
+    if headers.get("Host"):
+        attributes["server.address"] = headers["Host"]
 
     return attributes