Cybersecurity mesh is an architectural approach that involves a flexible, modular security structure. It emphasizes the need for security to be integrated across multiple platforms and environments, rather than relying on a single perimeter. This approach allows organizations to enforce policies effectively, manage risks, and respond to security incidents more dynamically. By implementing a mesh that aligns with business needs, organizations can achieve a more resilient and adaptive cybersecurity posture, addressing vulnerabilities across diverse systems.