Your cloud provider supplies and bills the infrastructure in your account. Blossom operates the application platform across it: releases, monitoring, automatic recovery, autoscaling, managed data workflows, and infrastructure automation without requiring a Kubernetes control plane in your cloud account.
Keeping the bills separate makes each one easier to audit. Blossom previews only the charge that will appear on your Blossom bill. For BYOC infrastructure, Blossom clearly states when your cloud provider will bill capacity directly without presenting an estimate that could be mistaken for part of the Blossom invoice.