Search Console and Bing Webmaster
Search Console provides a wealth of additional data about your website by embedding Google code into your host control panel.
This provides a wealth of additional information about how your site is found, such as the keywords used and times it has been seen, but not clicked (impressions)
Sample page load times are recorded and periodic examinations of your website are made by Google, from which they will report any issues. For example they may determine that some text is too small for a mobile display or buttons are too close together.
Google's purpose in all this free software is to make the browsing experience better using Google, so they want website owners to run better sites.
If not already done so, you need to open a Search Console account, this is quite easy to do, in fact all Google accounts can run off the one Google Account.
Not to be outdone, Microsoft operate a similar service, Bing Webmaster, don't forget that Bing are still a significant search engine. This is done the same way by embedding Bing code onto your control panel.
Website Monitor needs manager access to these accounts to capture the data provided.