I am evaluating a multi-cloud setup and would like to find the closest latency efficient AWS region for GCP's us-central1 region, my options in AWS are US East (2) and US West (2). I was unable to find any service/guide that would give me this mapping.
A couple of Stack Overflow answers used manual scripts to find this mapping. Is there any resource or better way to find AWS region for a GCP region?
On
You could use the results in the aforementioned Performance Dashboard, and make a simplifying assumption that one of Google's "east" regions is close to AWS'east and similarly for "west." Additionally, if you don't have an account yet, there is a public dashboard which shows inter-region latency and throughput in Google Cloud, and you could use the same sort of assumption.
But ultimately, unless/until there is a public inter-cloud latency tool available your best bet is probably to fire-up some VMs and take some measurements. John Hanley's caveats about what you see "today" may not be what you see "tomorrow" are definitely worth keeping in mind.
I’m not aware if there are some tool to measure multi-cloud latency, in GCP there is a tool called Performance Dashboard in the Network Intelligence menu, where you can choose up to 5 GCP regions to measure the latency among Google’s Network this could be from 1 hour to 6 weeks, the latency graph shows the median latency across all VMs deployed on Google Cloud. The vertical axis shows the median latency in milliseconds (ms), and the horizontal axis shows the change over time, I hope this information gives you a overview to make your decision and compare with AWS