What's the difference between REST & RESTful

Question

What\'s the difference between a REST system and a system that is RESTful?

From a few things I\'ve read most so called REST services are actually RESTful services. S

Answer 1

thanks for the answers. Read this article by Alex Rodriguez which suggests that a RESTful web service has 4 basic characteristics which are:

1. Use HTTP methods explicitly.
2. Be stateless.
3. Expose directory structure-like URIs.
4. Transfer XML, JavaScript Object Notation (JSON), or both.