Modular Decentralized Identity Architecture

Identity and Access Management (IAM) and Identity Governance & Administration (IGA) are evolving as IT moves from perimeter-bound, on-premises systems to hybrid, multi-cloud environments with federated partners and customer-facing digital services. Early IAM was centralized and monolithic, managing identities in corporate directories with local authentication, authorization, and auditing. Federation then extended identity control across organizational boundaries, enabling secure information exchange and single sign-on across multiple systems and even multiple organizations.

Cloud adoption accelerated change by prioritizing flexibility, scalability, and cost reduction, but it also introduced fragmented identity landscapes as organizations adopted multiple cloud services while retaining legacy systems on-premises. This hybrid reality raises governance, security, compliance, and integration complexity, especially as organizations expand beyond employee and partner access into consumer IAM (CIAM), where seamless onboarding and privacy compliance (e.g., GDPR, PSD2) become critical.

To meet emerging requirements, identity capabilities are increasingly exposed via developer-centric APIs, enabling orchestration, automation, and a modular “a la carte” approach across IAM segments such as federation, IDaaS, CIAM, and IGA. Modern architecture trends—everything-as-a-service, microservices, containerization, and orchestration with Kubernetes—are reshaping IAM/IGA into flexible, independently deployable services. Zero Trust principles, identity diversity (people and “things”), and analytics/AI/ML-driven access intelligence are converging into the “Identity Fabric” concept: a standardized, API-led set of services delivering access, administration, governance, privacy, and integration support across environments.

Kapstone positions its Autonomous IGA as a cloud-native, microservice, container-based modular platform aligned with the Identity Fabric approach, emphasizing AI/ML-driven governance recommendations, rapid identity and application onboarding, consistent policy enforcement, and an integration-focused Provisioning Gateway with SCIM 2.0 APIs, connectors, and DevSecOps-friendly tooling.

• Federation enables secure exchange of user information across divisions within organizations and between partner organizations.
• Single sign-on systems allow users to authenticate once across multiple IT systems and even across organizations.
• Most organizations use multiple cloud services while often retaining legacy applications and business-critical data on-premises.
• Consumer IAM (CIAM) is designed to authenticate, authorize, collect, and store consumer information across many domains for B2C scenarios.
• Identity API platforms expose key functionality via APIs to support orchestration, workflow, and DevOps automation across environments.
• Identity Governance and Administration (IGA) covers Identity Lifecycle Management and Access Governance within administration and auditing.
• Common warning signs for IGA modernization include excessive role proliferation and lengthy user and application onboarding.
• Microservices architectures commonly use containers such as Docker and rely extensively on APIs and lightweight protocols.
• Kapstone’s Provisioning Gateway uses a SCIM 2.0 compliant API and provides a generic connector for RESTful APIs.
• Kapstone leverages Apache Kafka for real-time stream processing of audit and logging services.

• “The only constant in life is change.”
• “Everything is becoming a service.”
• “Zero Trust has become required of IAM solutions also, where trust is never granted implicitly but is continually evaluated and uses defense in-depth tactics.”
• “The future of IAM will be API-based.”
• “Data should not reside in applications.”
• “Identity Fabrics are how KuppingerCole sees Identity and Access Management environments in the future and how they should be constructed.”
• “Organizations need to shift away from isolated, singular systems to a logical platform that provides and orchestrates a set of required IAM/IGA services and related functions.”
• “The modular approach also allows customers with legacy IGA solutions to use Kapstone to fill IGA capability gaps or replace an existing legacy IGA solution in stages.”
• “In summary, Identity Fabric provides the agility and the integration support for what organizations have, allowing the organization to move ahead at its own speed.”
• “A new paradigm of identity services for all digital services will be needed - Identity Fabric provides the agility.”