Online disk resizing was the one I tracked as it slowly trickled through alpha/beta. To be fair, pretty much every virtualization product had online resizing before GCE, so it could have been a matter of prioritization.

Whatever the heck Vertex AI is compared against the Sagemaker+Ground Truth pile that AWS has. By no means is any of it groundbreaking from either company, just piling open source software and buckets behind UIs, but it seems GCP is doing catch-up there.