ArcGIS Web APIs
Click here for Web API requirements on developing and deploying built web applications using Flex, JavaScript, and Silverlight/WPF.
ArcGIS Server ADFs
Select the ArcGIS Server ADF for requirements on developing and deploying built web applications.
.NET Web Application Developer Framework (.NET Web ADF)
Java Web Application Developer Framework (Java Web ADF)
ArcGIS Mobile APIs
Select the ArcGIS Mobile API for requirements on developing and deploying built mobile applications.