Zero Trust Architecture (ZTA) is a security model that assumes no user or action can be trusted by default. It applies to internal and external users, applications, systems, and networks. Therefore, this model requires authentication and authorization at every access point and interaction to ensure that resources are accessed within a secure environment. The core concept of Zero Trust shifts the security focus from the network perimeter to data and applications themselves, ensuring that all data and applications operate in a protected state rather than relying solely on defending against external attacks. To implement Zero Trust, enterprises must adopt security mechanisms such as identity authentication, behavior analysis, enforced access control, and encryption, while emphasizing segmented access control, policy-based authorization, and multi-factor authentication. This effectively reduces cybersecurity risks, enhances overall security, and better addresses the constantly evolving landscape of cyber threats.