List of resources to prepare for AZ 900 certification: 1. Tim Warner's video playlist 2. Andrew Brown's 3-hour video (broken into individual videos for every topic) 3. My collection of Microsoft documentation links And below are my own study notes, created from all of the above. Happy preparing. Availability Options An Azure geography is a discrete market, typically containing at least one or more regions, that preserves data residency and compliance boundaries. An Azure region is a set of datacenters , deployed close by and connected through a dedicated regional low-latency network. Each Azure region is paired with another region within the same geography (such as US, Europe, or Asia) at least 300 miles away, which together make a region pair Examples of geographies and corresponding regions: Geography Regions (Location of datacenters) India Central India (Pune), South India (Chennai), West India (Mumbai) Europe North Europe (Ireland), West Europe (Netherland