The OPTIONS method is used to request information about the communication options available for a resource. It allows the client to determine the allowed HTTP methods, the supported formats (like JSON, XML, etc.), the available headers, and other meta-information about the resource without actually fetching the resource itself. This method can be useful for a client to find out about the communication options before sending a more specific request to the server. The response of the OPTIONS method usually contains an ‘Allow’ header which lists the HTTP methods allowed for the given resource.
