In the classic SaaS model, the vendor hosts the application, data plane, infrastructure, networking, and operations in its own cloud account. In BYOC (Bring Your Own Cloud) , that boundary shifts: the customer keeps the workload, data, network controls, audit logs, and often billing inside their own cloud estate, while the vendor still provides a managed product experience. That definition is a good start, but it is incomplete. In practice, BYOC does not always mean "give the vendor a fresh cloud account and let them deploy." Enterprises, regulated organizations, AI infrastructure teams, and platform engineering groups all have different constraints. Some can provide a dedicated account. Some require deployment into an existing VPC. Some only allow workloads onto approved Kubernetes clusters. Some cannot allow any internet connectivity at all. That is why BYOC is better understood as a spectrum of deployment and operating models .…