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Learning PowerShell DSC by James Pogran

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Why do we need Configuration Management?

Whether you manage a few servers or several thousand, the traditional methods of server and software installation and deployment are failing to address your current needs. These methods treat servers as special singular entities that have to be protected and taken care of, with special configurations that may or may not be documented, and if they go down, they take the business with it.

For a long while, this has worked out. But as the number of servers and applications grow, and the number of configuration points grows, it becomes untenable to keep it all in your head, or consistently documented by a set of people. New patches are released, feature sets changed, employee turnover, poorly documented software; ...

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