Cloud native architecture is a modern approach to building applications that leverages the capabilities offered by cloud infrastructure providers and specialized cloud-based software services. It involves developing and deploying independent, self-contained microservices, which can be sourced from different providers or developed in-house. The key principles of cloud native architecture include consistent and reusable APIs, stateless applications for easier scaling, domain-driven design for clear communication among teams, and automation to manage the complexity of cloud resources. Benefits of this approach include on-demand scalability, streamlined updates, and more time for refining applications after launch.