Thanks for your reply! I know you guys are agentless, and I'm glad you are, as it is one less agent to install. I had read your blog post before, and to have memory into the equation for rightsizing, there are two options right now:
1) Use Cloudwatch Agent and push the metrics to Cloudwatch.
2) Use Datadog and integrate it with Cloudcheckr.
I don't want the burden to do any of those for all our managed servers (we are official AWS MSP Partner and host a lot of EC2 so we'd need to push agents for all these instances).
As site24x7 already has all memory usage figures, it would be great if there were an integration between site24x7 and Cloudcheckr the same way you did for Datadog. That would be a very quick win for all of us.