Most cloud breaches are not clever. They are a public storage bucket, an over-permissioned role, or a management port open to the internet. This course starts by making the shared responsibility model concrete across IaaS, PaaS, and SaaS, so you know exactly which failures are yours. You will then cover cloud identity and the principle of least privilege in an environment where roles multiply fast, network design with virtual private clouds, security groups, and private endpoints, and encryption with managed key services. Logging and monitoring are treated as architecture rather than an afterthought. Container and serverless security are introduced, along with the posture management tooling that catches drift before an attacker does.