Azure IaaS security is built on two reinforcing pillars: defense-in-depth architecture and Microsoft's Secure Future Initiative (SFI) principles. Defense in depth spans hardware root-of-trust, hypervisor-enforced VM isolation, network segmentation, encrypted storage, and continuous monitoring. SFI principles translate into: secure by design (TPMs, measured boot, Azure Boost, confidential computing with AMD SEV-SNP/Intel TDX), secure by default (isolated VNets, NSGs, DDoS protection, at-rest encryption, Trusted Launch enabled for Gen2 VMs), and secure in operation (Microsoft Defender for Cloud, Azure Monitor, JIT VM access via Entra ID). The post explains how these layers work together so no single control failure leads to platform-wide compromise.
Table of contents
Defense in depth as a systemSecure by design: Engineering security into the platformHardware and host-level trustVirtual machine-layer trustSecure by default: Protection enabled without frictionSecure defaults across networkingEncryption and data protection by defaultCompute protection defaultsSecure in operation: Continuous protection at runtimeMonitoring, detection, and signal correlationIdentity-centric control and least privilegeBringing defense in depth and SFI togetherSecurity as an ongoing platform commitmentCreate a resilient infrastructure with AzureSort: