The core architectural components of Microsoft Azure include:

1. Azure Regions: These are geographically distributed datacenter locations where Azure resources are hosted. Each region consists of multiple datacenters.

2. Availability Zones: These provide redundancy and high availability within a region. Availability Zones are physically separate datacenters with independent power, cooling, and networking.

3. Resource Groups: These are logical containers for managing and organizing Azure resources. You can group related resources together for easier management.

4. Azure Resource Manager (ARM): ARM is the control plane for managing and deploying Azure resources. It provides a consistent management layer for creating, updating, and deleting resources.

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