Vocabulary · Volume 1 and Volume 2

Reservation

A commercial arrangement whose effect depends on its terms: a price discount, a hold on specified capacity, or both. Establish which benefit is included before relying on it. The name alone does not guarantee location, configuration, timing, or failure coverage. Inside an organization the word may instead mean an internal hold or a place in a planning queue; ask what is reserved, for whom, where, for which dates, and under what release rule.

The definition appears in the Volume 1 glossary and Volume 2 glossary. This page collects where the book uses the term and where the blog takes it up.