ASP.NET is an open-source server-side web application framework designed for web development to produce dynamic web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services.

SharePoint is a business collaboration platform for the enterprise and the web application platform in the Microsoft Office server suite. Launched in 2001. It allows individuals in an organization to easily create and manage their own collaborative Web sites.

BizTalk is an industry initiative headed by Microsoft to promote Extensible Markup Language (XML) as the common data exchange language for e-commerce and application integration on the Internet. BizTalk says that the growth of e-commerce requires businesses using different computer technologies to have a means to share data. Accepting XML as a platform-neutral way to represent data transmitted between computers.

SQL Server is a relational database management system (RDBMS) from Microsoft that's designed for the enterprise environment. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications which may run either on the same computer or on another computer across a network (including the Internet).