SNMPv3, or Simple Network Management Protocol version 3, is a protocol used for managing and monitoring network devices. It provides a standardized way to collect information about devices like routers, switches, and servers, allowing network administrators to ensure optimal performance and security. One of the key features of SNMPv3 is its enhanced security compared to earlier versions. It includes authentication, encryption, and access control, which help protect sensitive data and prevent unauthorized access. This makes SNMPv3 a preferred choice for organizations that prioritize network security.