Easier Auth for Google Cloud APIs: Introducing the Application Default Credentials feature.- Google Developers Blog

Introduces Application Default Credentials (ADC) for Google Cloud APIs. ADC simplifies authentication by automatically discovering credentials based on the environment (e.g., GCE, GKE, local development with `gcloud auth application-default login`). This reduces the need for manual credential management and improves security by allowing applications to run with the least privilege necessary.