What are the services of auto-monitoring of everything and everything on the site for SEO tasks?

Question

Search Engine Optimization

There is a goal to select and implement a service that will monitor the configured elements of the site and promptly report any changes. In fact, autotests, but with a bias in the interests of SEO.
Why :
- Quickly see any bugs or deviation from the norm in terms of functionality, which minimizes losses for SEO.
- Spend less time on such checks. At a minimum, auditing of functional verification will become less frequent and its execution will accelerate, plus there will be no possibility of manual control.
Requirements :
• The ability to monitor everything you need from practical tasks.
• Labor costs for setup and support are comparable to the benefits.
• Fixing problems in a visual form, allowing you to quickly monitor the status every day and localize the problem. With any number of problems, the cost of viewing reports is no more than a few minutes.
• A single service for this type of monitoring. For example, the Topvisor Radar serves the same purpose and it is labor-intensive to keep 2 services for studying reports.
• The cost is not higher than the similar functionality of Topvisor.
• Reliability. If SaaS, then with sufficient demand, guaranteeing that the service will not close at any time.
Perhaps someone knows something similar?

Answer 1

spammed subtly ;)

Answer 2

I didn't even think about spamming.
Not a crowder (although it may seem so). The question is quite real, the radar of the topvisor does not allow solving problems in the proper way.
I forgot to mention: setting up monitoring by css-selector and xpach will not be superfluous (sufficient flexibility will not work on regular expressions alone)