The Identity-as-a-Service (IDaaS) market continues to expand in both vendor count and functional breadth, but the term covers significantly different delivery models and capabilities. Offerings range from cloud-delivered Single Sign-On (SSO) and federation to full identity provisioning across on-premises and cloud environments, with varying support for employees, partners, customers, mobile use, and on-premises integration. A key distinction is between true multi-tenant SaaS products that enable fast self-onboarding and managed services that operate separately per tenant. Across both models, hybrid IT remains the central challenge: integrating legacy web applications and provisioning back to on-premises systems is often harder than with traditional on-prem IAM, making on-prem connectivity a decisive selection criterion. IDaaS is positioned as an adoption “springboard,” letting organizations start with foundational cloud IAM and expand as maturity and cloud strategy evolve, contributing to cloud solutions gradually overtaking on-premises IAM.
Optimal IdM (founded 2005; headquartered in Lutz, Florida; offices also in Melbourne) offers OptimalCloud, a fully managed IDaaS providing SSO, federation, and multi-factor authentication, delivered in both multi-tenant and single-tenant modes and typically hosted on Azure. Its identity foundation is a virtual directory that brokers access to existing identity stores (AD, LDAP, databases) to avoid consolidating or synchronizing identities into a single cloud repository, while still supporting a private cloud directory (AD-LDS) and integrations with AD/Azure AD. The service includes self-registration with identity proofing, self-service profile and password management, delegated administration, SCIM-based CRUD and bulk provisioning, broad federation protocol support, a “one-click” app catalog, risk/context-based step-up authentication, fine-grained ABAC authorization policies, compliance-oriented reporting with extensive export formats, and developer-oriented REST/SOAP APIs and SDKs. Strengths center on federation, delegated administration, directory flexibility, and flat-fee pricing, while challenges include limited device-context signals, limited API security functions, and a small partner ecosystem.
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