Definition
Identities represent the unique digital personas or accounts that grant access to systems, applications, and data. These entities, whether human users, service accounts, or devices, possess specific attributes and permissions that define their capabilities within a digital environment. In practice, identity management systems authenticate and authorize these entities, ensuring only legitimate actors can perform authorized actions. Understanding identities is crucial for maintaining security, enforcing access controls, and complying with regulations. For instance, a user logging into a cloud platform with a username and password establishes their identity for that session. This differs from authentication, which is the process of verifying an identity, whereas identity is the entity itself. Concepts related to identities are fundamental across many IT certifications, including CompTIA Security+ and AWS Certified Solutions Architect Associate.