OOTB features
1)Advanced Web Analytics Reports.
2)Web Analytics Feature Stapler
3)Debugger Feature
Adds a new menu item to the Site Actions menu that attaches the debugger.
4)Log Viewer
This is a Feature for viewing the Unified Logging Service (ULS) logs from within Central Admin
5)New Claims-Based Authentication Model
6)Sandboxed Solutions
7)New User Interface including Ribbon
8)Built-in SilverLight Support.
9) New Hardware and Software requirements
10)Business Connectivity Services (BCS)
11)Client Object Model
12)Language Integrated Query (LINQ) for SharePoint
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