GCP - Workload Identity Federation - Access GCS Bucket From AWS Lambda Function

In this tutorial, you will learn how to access Google Cloud Storage (GCS) bucket from AWS Lambda function using Workload Identity Federation. With identity federation, you can use Identity and Access Management (IAM) to grant external identities IAM roles, including the ability to impersonate service accounts. This lets you access resources directly, using a short-lived access token, and eliminates the maintenance and security burden associated with service account keys.