Azure now has two Arms: the familiar Azure Resource Manager infrastructure description language and tools, and now a family of Azure VMs running on Ampere Arm-based processors. This new hardware option is a big change for Microsoft’s cloud, as it aims to catch up with AWS’s custom Graviton systems.
The arrival of Arm hardware in Azure is as much an economic decision as a technology one. If you’ve ever visited one of its hyperscale data centers, you’ll have been taken around huge rooms in stadium-size buildings full of racks packed with servers, storage, and networking hardware. The newer buildings are full to the brim with racks upon racks of the latest hardware, but some older rooms are half empty.
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