what is .Net and .Net Frame work

.NET Framework And Asp.net The .NET Framework is a popular development platform for building apps for Windows, Windows Store, Windows Phone, Windows Server, and Windows Azure. The .NET Framework platform includes       programming languages like c#,vb,etc     Technologies like Asp.net     Databases like sql server Asp.Net is a technology developed by Micro soft for the development of distributed applications. History: Microsoft started development of the .NET Framework in the late 1990s, originally under the name of Next Generation Windows Services (NGWS). By late 2000 the first beta versions of .NET 1.0 were released. Version 3.0 of the .NET Framework is included with Windows Server 2008 and Windows Vista. Version 3.5 is included with Windows 7 and Windows Server 2008 R2, and can also be installed on Windows XP and Windows Server 2003. On 12 April 2010, .NET Framework 4 was released alongsideVisual Studio 2010. Overview of .NET Framework release history Generation Version number Release date Development tool Distributed with 1.0 1.0.3705.0 13 February 2002 Visual Studio .NET N/A 1.1 1.1.4322.573 24 April 2003 Visual Studio .NET 2003 Windows Server 2003 2.0 2.0.50727.42 7 November 2005 Visual Studio 2005 Windows Server 2003 R2 3.0 3.0.4506.30 6 November 2006 Expression Blend Windows Vista, Windows Server 2008 3.5 3.5.21022.8 19 November 2007 Visual Studio 2008 Windows 7, Windows Server 2008 R2 4.0 4.0.30319.1 12 April 2010 Visual Studio 2010 N/A 4.5 4.5.50709.17929 15 August 2012 Visual Studio 2012 Windows 8, Windows Server 2012 Architecture: Design Features: Interoperability Because computer systems commonly require interaction between newer and older applications, the .NET Framework provides means to access functionality implemented in newer and older programs that execute outside the .NET environment. Access to COM components is provided in the System.Runtime.InteropServices and System.EnterpriseServices namespaces of the framework; access to other functionality is achieved using the P/Invoke feature. Common Language Runtime engine The Common Language Runtime (CLR) serves as the execution engine of the .NET Framework. All .NET programs execute under the supervision of the CLR, guaranteeing certain properties and behaviors in the areas of memory management, security, and exception handling. Language independence The .NET Framework introduces a Common Type System, The CTS specification defines all possible datatypes and programming constructs supported by the CLR and how they may or may not interact with each other conforming to the Common Language Infrastructure  specification. Because of this feature, the .NET Framework supports the exchange of types and object instances between libraries and applications written using any conforming .NET language. Base Class Library The Base Class Library  is a part of the Framework Class Library, it's functionality available to all languages using the .NET Framework. The BCL provides classes that encapsulate a number of common functions, including file reading and writing, graphic rendering, database interaction, XML document manipulation, and so on. Simplified deployment The .NET Framework includes design features and tools which help manage the installation of computer software to ensure it does not interfere with previously installed software, and it conforms to security requirements. Security       Additionally, .NET provides a common security model for all applications. Portability While Microsoft has never implemented the full framework on any system except Microsoft Windows, it has engineered the framework to be platform-agnostic, and cross-platform implementations are available for other operating systems. Microsoft submitted the specifications for the Common Language Infrastructure. the C# language, and the C++/CLI language to both ECMAand the ISO, making them available as official standards. This makes it possible for third parties to create compatible implementations of the framework and its languages on other platforms