CodeArt

ASP.NET AJAX, formerly code-named Atlas, is a set of extensions to ASP.NET developed by Microsoft. Including both client-side and server-side components, ASP.NET AJAX allows the developer to create web applications which can update data on the web page without a complete reload of the page (a "round trip" to the server).

.NET is a "software platform".  It's a language-neutral environment for writing programs that can easily and securely interoperate.  Rather than targeting a particular hardware/OS combination, programs will instead target ".NET", and will run wherever .NET is implemented.
(We use C# called as C Sharp, a full fledged Object-Oriented programming language from Microsoft built into the .NET Framework)

ASP.NET is a web application framework marketed by Microsoft that programmers can use to build dynamic web sites, web applications and XML web services. ASP.NET can be used to create anything from small, personal websites through to large, enterprise-class web applications. ASP.NET aims for performance benefits over other script-based technologies by compiling the server-side code.
(We use C# called as C Sharp, a full fledged Object-Oriented programming language from Microsoft built into the .NET Framework)

Microsoft Visual Studio is Microsoft's flagship software development product for computer programmers. It centers on an integrated development environment which lets programmers create standalone applications, web sites, web applications, and web services that run on any platforms supported by Microsoft's .NET Framework. Supported platforms include Microsoft Windows servers and workstations, PocketPC, Smartphones, and World Wide Web browsers.

Internet Information Services (IIS) is a powerful Web server that provides a highly reliable, manageable, and scalable Web application infrastructure for servers using Microsoft Windows. IIS helps organizations increase Web site and application availability while lowering system administration costs. IIS supports the Microsoft Dynamic Systems Initiative (DSI) with automated health monitoring, process isolation, and improved management capabilities.

Microsoft SQL Server is a comprehensive, integrated data management and analysis software that enables organizations to reliably manage mission-critical information and confidently run today’s increasingly complex business applications.

Microsoft SQL Server 2005 Express Edition is basically a free, light-weight, and redistributable edition of Microsoft SQL Server 2005. It provides an integrated data storage solution for developers writing Windows applications and Web sites that have basic data storage needs.The SQL Server Management Studio Express can also be downloaded to provide graphical user interface in administering the SQL Server 2005 Express. Another interesting feature that should be noted, unlike other free database servers, SQL Server 2005 Express Edition has no workload throttle.

Microsoft SQL Server 2005 Compact Edition is a free, easy-to-use embedded database engine that lets developers build robust Windows Desktop and mobile applications that run on all Windows platforms.