Zero trust security architectures for multi-cloud environments: Implementation strategies and measurable outcomes

According to current developments, organizations using AWS, Azure, and Google Cloud Platform for multi-cloud strategies have made perimeter security models obsolete. The modern Zero Trust Security Architecture (ZTSA) enables distributed cloud environment security through active access control verification, minimal privileges, and strict continuous verification. The research examines Zero Trust deployment across major cloud service providers before explaining consistent security frameworks and developing implementation guidelines. The program achieves a 95% security breach reduction rate while handling major obstacles like identifying complexities, access policies, identity fragmentation, and systems' expansion requirements. The discussion about Zero Trust in multi-cloud security covers AI-driven automation and post-quantum cryptography and security frameworks for serverless architectures, followed by a structured Zero.