Identity and access management (IAM) and identity-as-a-service (IDaaS) are both identity management solutions which include user access and management resources. An IAM solution defines the many ways in which a solution will verify the identity of a user, often achieved through various role-based policies, permissions, and more. IDaaS differs from IAM in the sense that it’s a type of IAM: rather than being an on-premises solution.
IDaaS is IAM achieved through software as a service (SaaS). Simply put, IDaaS is a SaaS-based IAM solution. IDaaS leverages numerous cloud-based identity solutions to implement IAM for a business, including adaptive MFA, identity provider integration, and SSO.