Today, AWS Fault Injection Service (FIS) announces the availability of two new scenarios, AZ Availability: Power Interruption and Cross-Region: Connectivity. The AZ Availability: Power Interruption scenario allows you to determine how a multi-AZ application will operate while experiencing the expected symptoms of a complete power interruption in a single AZ. The Cross-Region: Connectivity scenario helps you determine that a multi-Region application will operate as expected when the application cannot access resources in another Region.
Source:: Amazon AWS