Identity as a Service (IDaaS) is a cloud-based solution that provides identity management and authentication services. It allows organizations to manage user identities, access controls, and security protocols without needing to maintain their own infrastructure. This service helps streamline user access to applications and data while enhancing security. IDaaS solutions often include features like single sign-on (SSO), multi-factor authentication (MFA), and user provisioning. By using IDaaS, businesses can improve user experience and reduce the risk of unauthorized access. Popular providers of IDaaS include Okta, Microsoft Azure Active Directory, and Auth0.