Azure Pentest Security Form: form to fill before Pentest on workloads executed on Azure https://security-forms.azure.com/penetration-testing/terms
Azure PCI DSS 3.2.1 Responsibility Matrix 2019 https://gallery.technet.microsoft.com/Azure-PCI-DSS-Responsibilit-02d4b4b2
Attestation of Compliance Microsoft Azure’s 2019 PCI DSS 3.2.1 Can be downloaded for customer use at https://aka.ms/azure-pci
Furthur reading about the shared model can be found in the Shared Responsibility for Cloud Computing paper https://aka.ms/sharedresponsibility