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Definition
IDaaS, or Identity as a Service, is a cloud based solution that manages user identities, authentication, and access control for applications and systems. It allows organizations to outsource identity management to a centralized provider instead of building and maintaining it in house.

Why it matters
IDaaS simplifies identity management while improving security and scalability. It enables features like single sign on, multi factor authentication, and centralized user provisioning, helping organizations reduce complexity, lower costs, and enforce consistent security policies.

Example use case
A company uses an IDaaS platform to allow employees to sign in once and securely access email, internal tools, and cloud applications without separate logins.