Cloud architecture entails the design and organization of diverse components in a cloud computing environment, including servers, storage, databases, and networking. It defines how these components interact to deliver services and applications over the internet. Cloud architecture emphasizes scalability, dependability, and efficiency, enabling organizations to achieve flexibility in resource allocation based on demand. It supports various service models (IaaS, PaaS, SaaS) and deployment strategies (public, private, hybrid). A well-architected cloud environment enhances responsiveness and optimizes operational costs while ensuring high availability and security for users.