Most organizations believe AWS is winning the cloud war. They’re looking at the wrong battlefield. Yes, AWS dominates infrastructure.Yes, they run more workloads than anyone else.Yes, they won the first era of cloud computing. But the enterprise war has moved. The fight is no longer about compute, storage, or service catalogs.It’s about identity, policy, and governance across hybrid environments. Over 80% of enterprises are hybrid — and hybrid isn’t a transition state. It’s the end state. In a hybrid world, the winner isn’t the provider with the most instances.It’s the provider that controls identity, policy enforcement, and compliance. That company is Microsoft. SECTION 1: The Infrastructure War Is Over — AWS Won Let’s be clear:AWS holds ~32% global cloud infrastructure market share.230+ services across compute, storage, networking, AI.33 regions, 105 availability zones.Deep DevOps maturity and cost optimization tooling.AWS built the modern cloud. But infrastructure dominance does not equal governance dominance. Around 2020, enterprises hit architectural sprawl:AWSAzureGoogle CloudOn-premSaaS everywhereThe real problem stopped being “where do we run this?”It became “how do we govern identity and policy across all of it?” AWS IAM governs AWS resources. Microsoft Entra ID governs people. That distinction matters. AWS owns compute.Microsoft owns the employee surface area. And governance always lives where work happens. SECTION 2: What a Control Plane Actually Is A control plane isn’t servers. It’s the system that governs:Who gets accessUnder what conditionsAcross which environmentsWith what audit trailA true enterprise control plane requires:Identity origin — one authoritative source of truthContext-aware policy — real-time evaluation, not static rolesUnified governance — one compliance and audit framework across cloudsAWS IAM is resource-centric. Microsoft Entra ID is identity-centric. When Entra federates AWS, Microsoft issues the token. AWS becomes downstream. That’s not coexistence.That’s architectural hierarchy. SECTION 3: Entra ID’s Gravity — 1 Billion Active Users Microsoft Entra ID has over 1 billion monthly active users. That scale creates gravity. Because:95% of Fortune 500 use Microsoft 365Teams is where decisions happenSharePoint is where documents liveOutlook is where authority flowsWhen employees authenticate, Entra issues the tokens. When they access AWS, Entra evaluates the policy first. Even if the workload runs on AWS: Microsoft controls the gate. That’s control-plane gravity. SECTION 4: Conditional Access — Policy That Moves With Identity AWS IAM:Static policiesRole-based permissionsInfrastructure-scoped accessMicrosoft Conditional Access:Context-aware evaluationLocation-based enforcementDevice compliance checksReal-time risk assessmentSame user.Different access outcome.Based on context. That’s governance before breach. AWS Security Hub detects.Conditional Access prevents. One is reactive.One is preventative. In hybrid environments, prevention defines the control plane. SECTION 5: Defender for Cloud — Multi-Cloud Governance AWS Security Hub aggregates AWS signals. Microsoft Defender for Cloud governs Azure, AWS, GCP, and on-prem under one policy engine. That’s the difference. When an AWS incident occurs:Defender correlates identityEvaluates policy contextEnforces remediationAWS provides infrastructure telemetry. Microsoft provides cross-platform governance. In a hybrid world, the cross-platform layer wins. SECTION 6: Sentinel & Purview — Compliance as a Competitive Weapon Infrastructure compliance ≠ enterprise compliance. AWS Config:Infrastructure configuration stateEncryption statusResource hygieneMicrosoft Purview + Sentinel:Data classificationDLP enforcementInsider risk detectioneDiscoveryUnified audit logsRegulators don’t audit EC2. They audit access, data, retention, and proof of enforcement. Microsoft owns that layer. Even when workloads run on AWS. SECTION 7: The M365 Gravity Well Work happens inside Microsoft 365. And governance follows work.Identity through EntraApprovals via Power AutomateData classification via PurviewMonitoring via SentinelPolicy via Conditional AccessEven if compute sits on AWS:Governance sits on Microsoft. AWS doesn’t own the workflow layer. Without owning workflow, you can’t own governance. SECTION 8: Copilot — Control Plane Acceleration Copilot is not just AI. It is governance acceleration. To deploy Copilot safely, you need:Data classificationTight identity scopingStrong DLPContext-aware policyAI forces enterprises to harden governance. And that governance stack is Microsoft. AWS Bedrock offers compute. Copilot forces control-plane reinforcement. AI increases Microsoft’s gravity. SECTION 9: Azure Arc — Governing Competitor Infrastructure Azure Arc projects Azure policy onto:AWS EC2On-prem serversEdge infrastructureThis is governance abstraction. AWS Outposts extends hardware. Arc ...
続きを読む
一部表示