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• GET: fetch an existing resource. The URL contains all the necessary information the server needs to locate and return the resource.
• POST: create a new resource. POST requests usually carry a payload that specifies the data for the new resource.
• PUT: update an existing resource. The payload may contain the updated data for the resource.
• DELETE: delete an existing resource.
• HEAD: this is similar to GET, but without the message body. It's used to retrieve the server headers for a particular resource, generally to check if the resource has changed, via timestamps.
• TRACE: used to retrieve the hops that a request takes to round trip from the server. Each intermediate proxy or gateway would inject its IP or DNS name into the Via header field. This can be used for diagnostic purposes.
• OPTIONS: used to retrieve the server capabilities. On the client-side, it can be used to modify the request based on what the server can support.

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