Why SOAP can't use HTTP caching mechanisms

Question

I am making a transition from SOAP to REST, and I would like to convince my colleagues that this is a good move. We don\'t need the extra security mechanisms that SOAP can p

Answer 1

Another reason could be that SOAP URI is always the soap server, its not determining which resource needs to be cached or what is the resource. So Cache server cannot perform caching of something it don't know. However, REST has URI for each resource (can be multiple URIs for same resource), which helps caching server to perform its job.

On top of this, as mentioned in other answers only some of HTTP verbs are used for caching like GET, PUT etc (mostly GET).