说未来已经有点不准确了，实际上web2.0的重要特征之一就是开放API，而REST方式是开放API这个行为的实现模式之一。
Cakephp是这样介绍的：
Many newer application programmers are realizing the need to open their core functionality to a greater audience. Providing easy, unfettered access to your core API can help get your platform accepted, and allows for mashups and easy integration with other systems.
While other solutions exist, REST is a great way to provide easy access to the logic you’ve created in your application. It’s simple, usually XML-based (we’re talking simple XML, nothing like a SOAP envelope), and depends on HTTP headers for direction. Exposing an API via REST in CakePHP is simple.
在wikipedia上是这样解释的：
Representational state transfer (REST) is a style of software architecture for distributed hypermedia systems such as the World Wide Web. The terms “representational state transfer” and “REST” were introduced in 2000 in the doctoral dissertation of Roy Fielding,[1] one of the principal authors of the Hypertext Transfer Protocol (HTTP) specification. The terms have since come into widespread use in the networking community.
REST strictly refers to a collection of network architecture principles which outline how resources are defined and addressed. The term is often used in a looser sense to describe any simple interface which transmits domain-specific data over HTTP without an additional messaging layer such as SOAP or session tracking via HTTP cookies. These two meanings can conflict as well as overlap. It is possible to design any large software system in accordance with Fielding’s REST architectural style without using HTTP and without interacting with the World Wide Web.[citation needed] It is also possible to design simple XML+HTTP interfaces which do not conform to REST principles, and instead follow a model of remote procedure call. The difference between the uses of the term “REST” therefore causes some confusion in technical discussions.
Systems which follow Fielding’s REST principles are often referred to as “RESTful”.
在学习cakephp的时候，发现它对于REST模式的开发支持的也不错。稍后继续研究。
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