What architectural pattern helps ensure creation is versioned and auditable while using serverless technologies?

The choice of utilizing Cloud Build and Terraform for deployment is the most effective architectural pattern for ensuring that creation is versioned and auditable within serverless technologies.

Cloud Build integrates with various source control systems, enabling continuous integration and automated deployment processes while maintaining an audit trail of all changes made. Each build can be recorded with a unique identifier that references the version of the code that was deployed, allowing developers to track changes over time easily. This helps maintain a clear history of deployments, making it simple to revert to previous versions if necessary.

Terraform, on the other hand, is an Infrastructure as Code (IaC) tool that allows you to define infrastructure in a declarative manner. It tracks changes to your cloud infrastructure, which is critical when using serverless architectures that can frequently change. Terraform's state files maintain a version history of the infrastructure, which aids in auditing and allows for consistent replication and change management of deployed resources.

By combining Cloud Build and Terraform, organizations can achieve robust versioning and audibility. These tools provide clear visibility into both the application code and infrastructure, ensuring that every change is tracked and documented appropriately, which is crucial for compliance and operational excellence in serverless environments.