What's the simplest way to run load tests?

I have a backend API and some test data representing real clients. I can write a wrk script that loops through the test data and sends requests to the backend. However, my development machine is network/connection limited so I'd like to run this on some cloud provisioned platform. What's the simplest tool or PaaS that would meet these needs? It doesn't have to be the most cost effective, I simply need the ability to run many instances of my wrk script.

https://github.com/wg/wrk