How should you deploy an application on Cloud Run to route users to the nearest region for low latency?

Deploying the application to each region and serving it at a global anycast IP address is the best approach for routing users to the nearest region, ensuring low latency. By deploying the application in multiple regions, you effectively create a distributed architecture that places instances of your application closer to users geographically. This reduces the time it takes for requests to travel across the network, thereby improving response times and enhancing the overall user experience.

Using a global anycast IP address allows for efficient routing. Anycast is a networking technique where multiple servers share the same IP address. When a user makes a request to this IP address, the request is routed to the nearest server in terms of network topology. This means that users are automatically sent to the nearest deployed instance of the application, facilitating low latency access to the application regardless of their physical location.

This method not only optimizes application performance but also provides higher availability and resilience. If one region experiences issues, users can still be routed to the nearest functioning instance, ensuring continuity of service.

The other options do not provide the same level of effectiveness in minimizing latency for a global user base and do not utilize both regional deployment and anycast routing effectively.