My guess would be that Metrist made one or more API calls that failed within a time-slice (hopefully more than one failure). They then mark the entire day orange or red and compare it to AWS's green. Which is true, for the entire day their status symbol was probably green.
The AWS team has a hard challenge of reporting availability and deciding when a system is not green across dozens of API use cases per service, hundreds of services, hundreds of data centers, dozens of availability zones, and millions of clients.
Metrist has no visibility into services internal SLA, SLO, and SLIs. [1]
The AWS team has a hard challenge of reporting availability and deciding when a system is not green across dozens of API use cases per service, hundreds of services, hundreds of data centers, dozens of availability zones, and millions of clients.
Metrist has no visibility into services internal SLA, SLO, and SLIs. [1]
[1] https://cloud.google.com/blog/products/devops-sre/sre-fundam...