Many development teams now have automated unit, integration and system tests. Often the automated non-functional testing is neglected - with clear consequences: Performance bottlenecks or memory leaks are only detected during operation under load and that means that the end customer is the one who sees the error first.

The load testing feature of Azure DevOps is no longer developed or supported. With K6, we have a load testing tool at hand that actively supports us. In addition to an introduction to K6, we will show how a load test is implemented and evaluated. Finally, we will point out the differences and possibilities of the open source version compared to the commercial cloud service.