I hade a need to export, import and edit a Sharepoint list with hundreds of thousands of items. This is how I solved it with the Powershell.
Read More Using GraphAPI for exporting, importing and editing gigantic Sharepoint lists
Getting Power Apps to work with large Sharepoint lists can be tricky – but its doable! When you pay attention to indices you can even keep up a relatively good performance!
Read More Power Apps with large Sharepoint lists – performance with indices
This post explains a way to handle errors when occasionally your Power Apps triggered flow runs too long.
Read More Handling errors when Power Apps triggered flow occasionally runs too long