Reservation purchase and cadence

All reservations are applied on an hourly basis (except for Databricks). When you are purchasing reservations, it should be based on your consistent usage. You can determine which reservations to purchase by examining the usage data and leveraging Azure Advisor and the ACM Power BI app, or even by using reservation APIs.

Note

If you want to learn more about how to get a list of recommendations using a REST API, you should check out the Microsoft documentation available at https://learn.microsoft.com/en-us/rest/api/consumption/reservation-recommendations/list

Reservation purchase is certainly not a one-time task. As a guiding principle, when you are starting your journey, start small. Purchase a first reservation for a small quantity of VMs to get yourself comfortable with the lifecycle of reservations. As time goes by, you will be purchasing reservations more frequently to cover newer workloads.

Reservations are charged to the payment method...