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amazon-web-servicesregion

Is it possible to use services in different regions in AWS

Say there are two AWS services A and B which forms part of infrastructure of an application

  1. Is it possible to use say service A in region X and service B in region Y in AWS.

  2. Is it recommended.

  3. What advantages do we get when we design our application like this , (if any)

  4. Going through this and this, i have learnt that we should use regions to avoid latency issues and use Availability Zones to replicate the infrastructure thereby achieving robustness. Is my understanding correct ?

Solution

    1. Of course,it is possible to provision your services in different regions.

    2. It depends, in general if you have application which consists of service A and service B - I don't think it would be a good decision, because if (in theory) you loose service A in region X - service B in region Y makes no sense as it depends on A and cannot fully operate.

      More preferable approach is to have application configured fully in 2 regions (service A and B in region X load balanced not even weight in region Y which also has A and B services). In this scenario:

      • you will not loose your application operation entirely
      • you will be able to provide best response time for appropriate customer (for example - APAC clients can be served in region X, EMEA ones - in region Y)
    3. This is correct. If you have services A in region X and service B in region Y - you can definitely run into latency issues. The difference will be noticeable. Last statement is based on our experiments in AWS.