Google cloud engine is down
status.cloud.google.com
status.cloud.google.com
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).
Have no idea if other regions or users had major issues though.