This security blueprint explains how organizations building greenfield cloud applications, new systems designed from the ground up using public cloud IaaS/PaaS, microservices, infrastructure-as-code, and CI/CD, must modernize security to match the cloud’s speed, scale, and ephemeral workloads. It outlines key success factors: understanding the shared responsibility model, automating discovery and continuous assessment, unifying controls across providers, accounts, servers, containers, serverless resources, and PaaS services, and integrating security into DevOps workflows to shift validation left. The guide then provides a practical Halo implementation blueprint: organize assets into groups, apply and layer policies, connect cloud accounts via APIs, deploy lightweight microagents on servers

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