A Web application
•A Web application (Web app)is an application program that is stored on a remote server and delivered over the Internet through a browser interface.
Web services
•Web services (sometimes called application services)are services (usually including some combination of programming and data, but possibly including human resources as well) that are made available from a business's Web server for Web users or other Web-connected programs. Providers of Web services are generally known as application service provider s. Web services range from such major services as storage management and customer relationship management (CRM) down to much more limited services such as the furnishing of a stock quote and the checking of bids for an auction item. The accelerating creation and availability of these services is a major Web trend.