From the official Microsoft’s .NET Framework website basic review of the key features. In easy to read and view with no Silverlight plugin.

CLIENT
Client applications brings the power of .NET to the desktop via rich, interactive applications.

BROWSER
.NET and the web programming model make creating Web 2.0 applications easier.

PHONE
The .NET Framework brings the easy and productivity desktop programming on the phone.

SERVER
.NET helps make creating scalable secure, agile and manageable applications made easier.

CLOUD
Cloud computing helps lower costs with greater scalability allowing use of IT dollars.

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RICH UX
Proper UX (User eXperience ) will help reduce costs and make users happy.

WEB UX
Web pages that capture user’s attention help them learn about and buy your products.

RIA UX
Having the rich framework & tools makes rich intermet applications creation easier.

SERVICES
Services promise to help save organizations money and enable data reuse.
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WORKWLOF
Help streamline processes, monitor status, identify and remove bottlenecks, and reduce waste.

DATA
Leveraging its data helps an organizations gain a competitive advantage.

IDENTITY
Having a standard method to authenticate and authorize users can have cost saving.
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RUNTIME
The CLR is the core of the .NET Framework. Other features build on top of this.

COMMON TOOLS
Good tools helps developers understand complex concepts and quickly accomplish assigned tasks.