Compare multi-AZ and multi-Region recovery capabilities in ARC
Zonal shift, zonal autoshift, and routing control in Amazon Application Recovery Controller (ARC) can all achieve rapid recovery and help you to ensure resilience for your Amazon applications. These features are highly available and help support recovery in scenarios when your application is experiencing increased latency or reduced availability. These features also help recover applications quickly by shifting traffic away from isolated impairments, which limits the impact and time lost from impairments.
Routing control is primarily focused on Amazon applications that are in multiple Amazon Regions (multi-Region), while zonal shift and zonal autoshift only support shifting traffic for supported resources with multi-AZ applications.
The information in the following table includes some of the key features of zonal shift, zonal autoshift, and routing control. These descriptions can help you better understand how a specific option might be the best choice for application's needs.
| Routing control | Zonal shift | Zonal autoshift |
|---|---|---|
|
Regional Reroutes traffic from one Amazon Region to another (primarily) |
Zonal Shifts traffic away from an Availability Zone Traffic goes to other Availability Zones in the Region, not to a specific target |
Zonal Shifts traffic away from an Availability Zone Traffic goes to other Availability Zones in the Region, not to a specific target |
|
Requires setup Requires configuration and setup |
May require setup Requires opt-in for some supported resources For more information, refer to Supported resources |
Requires setup Must be enabled for a supported resource For more information, refer to Supported resources |
|
Customer-initiated Customer determines when to re-route traffic |
Customer-initiated Customer determines when to start a zonal shift |
Amazon-initiated Amazon shifts application traffic away from an AZ on your behalf |
|
Fee-based Requires separate charges for routing control |
Included with services (no additional charge) Creating zonal shifts to move traffic away from AZs is included for supported resources |
Included with services (no additional charge) Starting autoshifts to move traffic away from AZs on your behalf is included for supported resources |
|
Does not expire Traffic can be rerouted to a replica indefinitely |
Temporary All zonal shifts must be set to expire |
Temporary Amazon starts and ends autoshifts |
To learn more about each of these features, see the following chapters: