Management UAT

What are the UAT? Give me the definition of UAT in simple language.
Provide me the detailed information for management of UAT, or tell me from where I can get the detailed information of UAT?

[Saksham]

UAT means: User Acceptance Testing

UAT: UAT is the most important stage in the software development process.

For all UAT information, here I am attaching a file, from where you can get the all detailed info of UAT. The file is in PDF format. The PDF includes following contents:

Definition of UAT
Recruitments covering during UAT
Steps of UAT
Test planning
Managing Incidents
Common Difficulties with UAT
Test Management Shortcomings

Here I am attaching a file, from where you can download the guidance for manages UAT.
The PDF contains these topics:

Introduction to problems
User acceptance testing
Business users - the critical factor in UAT
Roles and responsibilities in user acceptance testing
Rules of thumb for UAT
Making UAT a success