Reserved Instance
An AWS commitment to pay for a specific type of capacity, such as an instance family in a region, for one or three years in return for a discount on the hourly rate. It bills whether or not it is used. Why it matters: It saves a lot on steady workloads, but becomes waste if the workload changes.
Read the term in context.
Each row is a lesson that uses this term. The lesson where it first appears is the canonical definition.