The spiral development process prescribes the following four milestone reviews. This page describes the overall process, and the types of reviews that are held as part of that process.
If you are looking for information on specific reviews that have been held or will be held, see the CI Development Milestone Reviews page.
The release process is not a formal review in the same sense as LCO, LCA, and IOC, but it does have deliverables that must be provided and inspected on a schedule. (more...)