What type of protocols can Envoy support in service communication?

Envoy is designed to be a highly flexible and extensible proxy that can handle a variety of protocols for service communication. HTTP/2 and gRPC are among the key protocols that Envoy natively supports.

HTTP/2 is an improvement over the earlier HTTP/1.1 protocol, offering features like multiplexing, header compression, and binary framing, which enhance performance and efficiency in communication between services. gRPC, which is built on HTTP/2, allows for the use of remote procedure calls that can transmit data in a structured way, typically using Protocol Buffers for serialization.

These capabilities make Envoy particularly suitable for modern microservices architectures, where effective and efficient inter-service communication is essential.

While the other options mention various protocols, they do not capture the full capability of Envoy in modern service communication within distributed systems. Envoy's strong support for HTTP/2 and gRPC aligns with the trends in microservices, emphasizing speed and efficient communication patterns.