RedLine recently passed the stringent requirements of the CloudBees Technology Partner Program.
You can see an overview as well as a detailed integration write-up.
One of the main benefits is that as developers use CloudBees to develop-test-deploy their app there is now a very low cost way to estimate the proper configuration. And with CloudBees you can either set-up Autoscaling or tune your configuration to the size that you need.
Since the cost of running load tests on spot instances is so low, developers can run dozens and even hundreds of tests to optimize their application and their configuration for the highest levels of scalability and performance.