This did affect us on gsuite. We were receiving an error telling us we were blocked due to unusual suspicious activity coming from our ip. It was pretty misleading and took a little bit to realize that wasn't the case.
Google internally use the DDos blocking system to block requests to reduce load on critical systems during outages. (It's common for systems to require reduced load during startup because caches are still filling and user requests after an outage are often more expensive to process)