Services that will verify throttling levels?

[philCryoport]

Hi folks, we're a life sciences company -- and thus, if we set a throttle level limit for production servers, we should verify that throttle level limit in the validation environment.

I know we could roll-our-own with JMeter or Postman -- but that also means setting up significant infrastructure to verify "no throttling below X; throttling at X or above".

Rather than re-invent the wheel, it would be great if we could pay for a service that we can configure and push a button -- and thus shown the throttling only occurs at a level of X or higher.

Googling hasn't found anything yet. Any suggestions / recommendations for SaaS's?