Begin with the service boundary
A German business comparing cloud support should distinguish the infrastructure provider, application operator and any managed-service partner. List the exact cloud services, regions and accounts that run a representative application. Record who owns identity, network configuration, patching, backups and application data; an infrastructure provider's audit does not automatically cover a customer's configuration or an unrelated support supplier.
Germany's BSI guidance on secure use of cloud services discusses provider selection, locations, subprocessors and the scope of assurance. Ask whether a relevant audit report covers the service, period and locations actually being considered. Review the report and any customer-side controls with your assurance team. Do not infer a certification or assessment for Clouvenix from a cloud provider's report.
Ask for the operating evidence
Request a responsibility matrix for cloud accounts, support access, incident notification, changes and recovery. Verify how privileged support access is approved, logged and revoked. Ask how the supplier communicates a changed subprocessor or an incident affecting the agreed service. Keep the responses with the contract and revisit them as the architecture changes.
Rehearse an exit without moving production
Choose a non-sensitive sample workload and identify the export format for its database, files and configuration. List cloud-specific APIs, encryption keys, DNS ownership and third-party licenses that would affect portability. Test an export and import in an isolated account and record the time and missing dependencies. An export alone does not prove that the application can operate at a new destination.
Compare the actual proposal
Separate engineering fees, cloud consumption, recovery testing and continuing support. Agree deliverables, acceptance checks and escalation coverage for your own environment. Clouvenix can scope cloud architecture services; assurance claims must be verified for the specific provider and service.