Web applications are front end, top level content packages that allow you to display content from your farm. Service applications are more granular pieces of functionality.
When SharePoint 2010 was launched it introduced areas of new functionality to help developers and architects build and create better and more advanced applications. 2010 includes:
Building a SharePoint application has never been so advanced. The integration of Silverlight means developers can go one step closer to solving business issues with content, information and communication.
Evoke IT specialise in building applications that both maximise efficiency and exceed user expectations. By using Microsoft you can have all your applications, documents, sites and directories integrated into the same system avoiding common problems with miscommunication, ineffective document management, duplication, excessive manual input and unused business intelligence.