Chapter 32. Change Management

This chapter is about formal change-management processes such as the ones that exist in large enterprises. Big changes require a lot of care. Many people making many changes at the same time requires coordination. An organization’s change-management process seeks to make all of this work.

Most of what SAs do involves making changes. We fix someone’s PC, we configure a port on a network switch, we plug in a cable, we write code and upload it to a server. Every time we run a program, we are, in fact, changing the system.

Most changes are small and have only a localized impact. They affect just a very small part of the system as a whole. You probably make hundreds or thousands of such changes every day.

Other changes ...

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