Vertex AI RAG Engine Serverless mode Vertex AI RAG Engine Serverless mode is now available in public

## Feature Feature **Vertex AI RAG Engine Serverless mode** Vertex AI RAG Engine Serverless mode is now available in [public preview](https://cloud.google.com/products#product-launch-stages). Serverless mode provides a fully managed database for storing RAG resources that abstracts away database provisioning and scaling. You can seamlessly switch between Serverless mode and Spanner mode, which provides dedicated, isolated database instances. For more information, see the following: * [Deployment modes in Vertex AI RAG Engine](https://cloud.google.com/vertex-ai/generative-ai/docs/rag-engine/deployment-modes) * [Serverless mode](https://cloud.google.com/vertex-ai/generative-ai/docs/rag-engine/serverless-mode) * [Managing Spanner mode](https://cloud.google.com/vertex-ai/generative-ai/docs/rag-engine/spanner-mode) * [Switching between modes](https://cloud.google.com/vertex-ai/generative-ai/docs/rag-engine/switching-modes)