What types of backend services does API Gateway support? (Choose three)

API Gateway in Alibaba Cloud is designed to facilitate the creation, management, and deployment of APIs that can interact with various backend services. Among the services it supports, HTTP(s) service is a fundamental option because it allows users to define APIs that can route requests to any HTTP-based services. This capability enables seamless integration with web applications or microservices that expose their functionalities over HTTP.

Additionally, Cloud Storage is typically not classified as a direct backend service for API Gateway, as it is primarily used for storing files and large objects rather than serving HTTP API responses. While resources in a VPC and Function Compute are also viable connectors for API Gateway, they complement the HTTP(s) services rather than replace the need for them.

When considering the types of backend services API Gateway can support, it's essential to recognize that its primary role is to act as a front door for web-based applications. It translates incoming requests to suitable formats, enabling interaction with services that might be running across different platforms, whether they are traditional servers, cloud functions in Function Compute, or applications inside a Virtual Private Cloud (VPC). Thus, HTTP(s) services stand out as a key type of backend that API Gateway can easily manage, providing flexibility and scalability for API-driven architectures.