What does 'HTTP-based' mean in relation to the transport protocol?

"HTTP-based" in the context of transport protocol means that data transfer occurs over the HTTP protocol. This implies that all messages (requests and responses) are formatted and transmitted in a manner compatible with HTTP, using its methods (GET, POST, PUT, etc.), headers, and structure.

For example, REST API services are based on HTTP, where the client sends HTTP requests to the server, and the server responds with HTTP responses containing the required data. This approach simplifies integration, as HTTP is widely supported and operates through standard ports and proxies.