Using a CSP partner for billing and licensing doesn't inherently change your underlying compliance obligations — you remain responsible for how you configure and use Microsoft's services to meet requirements like HIPAA or GDPR. That said, a knowledgeable partner can help you configure Microsoft 365/Azure features (like data residency settings, encryption, and access controls) correctly to support your compliance requirements, which can meaningfully improve your actual compliance posture in practice even though the legal responsibility stays with you.
If you need help configuring your Microsoft environment to support HIPAA, GDPR, or similar compliance requirements, that's something we can help with directly.