Difference between MVC3, MVC4, MVC5, MVC6

Microsoft has added exciting features in every new version of ASP.NET MVC that make developers more comfortable building scalable web applications easily. In this ASP.NET MVC tutorial, we will have a quick look into new and important features introduced in major versions of Microsoft ASP.NET MVC starting fromMVC3 to MVC6 (the latest one so far).

ASP.NET MVC3

1. New Project Templates having support for HTML 5 and CSS 3.
2. Razor View Engine introduced with a bundle of new features.
3. Having support for Multiple View Engines i.e. WebForms view engine, Razor or open source.

ASP.NET MVC 4

1. ASP.NET Web API
2. Refreshed and modernized default project templates
3. New mobile project template
4. Many new features to support mobile apps
5. Display Modes
6. Bundling and Minification
7. Enabling Logins from Facebook and Other Sites Using OAuth and OpenID

ASP.NET MVC 5

1. Attribute-based routing such as [Route("Empolyee/{EmpID}")].
2. ASP.NET Identity for authentication and identity management.ASP.NET Identity is a new Membership provider to handle the authentication and authorization for social networking the site just like Google, Twitter, Facebook, etc.
3. Bootstrap replaced the default MVC template.
4. Authentication Filters for authenticating the user by custom or third-party authentication providers.

ASP.NET MVC6 | ASP.NET vNext

1. MVC 6 added a new cloud computing optimization system of MVC, Web API, SignalR and entity framework.
2. The Microsoft  make a bundle of MVC, Web API, WebPages, SignalR, That bundle we called MVC 6.
3. In MVC 6, Microsoft removed the dependency of system.web.dll from MVC 6  because it's so expensive. Typically it consumes 30K memory per request/response.
4. Right now, in MVC 6 consume 2K  memory per request-response. It's too small memory consumption.
5. Most of the problem solved using the Roslyn Compiler.
6. The ASP .Net  vNext used the Roslyn Compiler,  By using Roslyn compiler do not need to compile the application Its  compile automatically the application code.
7. The .Net vNext is a cross-platform and open source.
8. The .Net vNext has the new project extension project.json. Basically, project.json contains the all dependency dll of the application.
9. In MVC 5.1 and 5.2 support to Enum and EnumHelper in  razor views