New ask Hacker News story: How do you folks monitor external dependencies at scale

How do you folks monitor external dependencies at scale
16 by abhishekash | 8 comments on Hacker News.
Most software companies would have external dependencies like cloud platforms, APMs , Functional/Business integrations. How do you folks monitor these external dependencies errors , latency etc ? RSS feeds etc are there but there are days were AWS is slow to update status page, latency in CDN are not that obvious in the middle of night when you get paged. Makes me wonder what other folks are doing about this ?