The organization decides what it will monitor and measure; which methods of monitoring, measurement, analysis and evaluation it will use so the results can be relied on; when monitoring and measurement take place; and when the results are analysed and evaluated. It evaluates how the QMS is performing and how effective it is, and retains suitable documented information showing those results.
This control maps to 19 controls across 13 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.