Understand availability zones

- [Instructor] Let's talk about availability zones. Availability zones are areas within a region. A quick refresher, geographies contain regions, and regions contain availability zones. These availability zones are connected through dedicated high-performance networks, with a round trip latency of less than two milliseconds. And the physical separation between them is around 75 miles or 120 kilometers. This is another point where customers have a call to action. Customers have the option of choosing either zonal or zone redundant replication of data. You're probably thinking, what that means? Zonal replication is when data is replicated within a single availability zone. So zone local is zonal. In this type of replication, the data is confined to one availability zone. There is redundancy, but only within that specified AZ. In zone redundant replication, the data is replicated across availability zones. Customers can choose zonal replication for low priority services, and zone…