Sounds like a small scale outage, I wouldn't use that headline TBH. Amazon wouldn't even report something like this. We get various small outages from AWS every few weeks, and it doesn't even show up on their dashboards.
Sometimes they do. If enough customers are affected, Amazon is "required" to disclose. The number, however, has never been disclosed to the public so we don't know the rubric. I have seen announcement about partial AZ failures myself.
Google doesn't say how many customers and how many instances are affected by this, so I will take it as a partial AZ / DC failure (a good number of racks are having issues).