Chapter 16. Service Requirements
Services are the applications that customers need and use. For the purpose of this book, the term service means all the parts that make an application work: the software, the hardware, and the operations that bring it all together. A service may be a single piece of software on a single machine, or many different software components across many machines that work in cooperation to provide a service, or something in between. A service may have direct customers, such as a web-based application, or it may be invisible to most people, such as a database that is used by other services.
Fundamentally, system administration is about providing services. Computers and software are useful only when they are actively providing ...
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