I'm not an expert with AWS or Google Cloud, so I'm interested in knowing: What "level" of customer or SLA do you have to be to get a certain quantity or guarantee of support and troubleshooting? Or is it that if even a free-tier customer points out something that is fundamentally a problem, it will receive attention by certain solutions engineers? Are there $ spending, 20 x (c3.4x.large), or I-pay-you-for-certain-upt…
If a service you depend on is down, your support agent will be able to tell you it's down, but not speed up the fix.
Cloud support will have more information about performance black holes and limitations that the documents don't describe. They also will be able to advise on "is this design or that design likely better". They generally know how the backends of GCP services work, and their common failure modes, which is pretty hard knowledge to get from the outside.