Resilience in Amazon WAF Classic
Warning
Amazon WAF Classic support will end on September 30, 2025.
Note
This is Amazon WAF Classic documentation. You should only use this version if you created Amazon WAF resources, like rules and web ACLs, in Amazon WAF prior to November 2019, and you have not migrated them over to the latest version yet. To migrate your web ACLs, see Migrating your Amazon WAF Classic resources to Amazon WAF.
For the latest version of Amazon WAF, see Amazon WAF.
The Amazon global infrastructure is built around Amazon Web Services Regions and Availability Zones. Amazon Web Services Regions provide multiple physically separated and isolated Availability Zones, which are connected with low-latency, high-throughput, and highly redundant networking. With Availability Zones, you can design and operate applications and databases that automatically fail over between Availability Zones without interruption. Availability Zones are more highly available, fault tolerant, and scalable than traditional single or multiple data center infrastructures.
For more information about Amazon Web Services Regions and Availability Zones, see Amazon Global
Infrastructure