Differences comapre to Classic ASP with ASP.NET

               ASP.NET uses the multi-language abilities of the .NET Common Language Runtime,    allowing Web pages to be coded in VB.NET, C#, J#, Delphi.NET, Chrome, etc.

         Ability to use the code-behind development model to separate business logic from 

    presentation.

         Ability to use true object-oriented design for programming pages and controls

        Session state in ASP.NET can be saved in a Microsoft SQL Server database or in a

    separate process running on the same machine as the Web server or on a different

    machine. That way session values are not lost when the Web server is reset or the ASP.NET

    worker process is recycled. 

       Ability to cache the whole page or just parts of it to improve performance.

    Compiled code means applications run faster with more design-time errors trapped at the

    development stage

    ASP.NET encourages the programmer to develop applications using an event-driven GUI

   model, rather than in conventional Web-scripting environments like ASP and PHP.

   The framework combines existing technologies such as JavaScript with internal components

   like "View State" to bring persistent (inter-request) state to the inherently stateless Web

   environment