IAM Architecture & Solution Design
Cloud, Hybrid & Multi-Tenant Identity Architecture for Australian Enterprises
The Blueprint Behind Secure Identity
A well-designed identity architecture is the backbone of secure, scalable, and maintainable IT operations. Entraneer's architecture practice delivers rigorous solution designs for Microsoft Entra environments, whether you are building a greenfield cloud identity platform, rationalising a complex hybrid estate, or designing multi-tenant structures for managed service delivery.
Good IAM architecture considers tenant topology, directory structure, authentication flows, trust relationships, network boundaries, API integration patterns, and data residency requirements. We design architectures that are not only technically sound but operationally sustainable. A design that your team cannot maintain is a design that will fail.
Cloud, Hybrid & Multi-Tenant Architecture
Australian enterprises rarely operate in a single, clean environment. Our architecture practice is built to handle this complexity.
Cloud-Native
We design Entra ID tenant structures, Conditional Access architectures, and authentication policy frameworks that scale with your organisation. This includes authentication strength definitions, phishing-resistant MFA strategies, and named location configurations tailored for cloud-first environments.
Hybrid Identity
We architect Entra Connect synchronisation topologies, plan password hash sync or pass-through authentication strategies, and design seamless SSO experiences that bridge on-premises Active Directory and cloud. Multi-forest synchronisation, device writeback, and GALSync are all within scope.
Multi-Tenant
For government shared services, managed service providers, and post-acquisition integrations, we design cross-tenant access policies, B2B collaboration frameworks, and Entra External ID configurations that maintain security boundaries while enabling productive collaboration.
Common Architecture Scenarios
The most common scenarios we are engaged to design span the full spectrum of identity modernisation challenges facing Australian enterprises. Whether you are eliminating legacy infrastructure, consolidating after a corporate event, or building for the future, our architecture practice has the depth of experience to deliver designs that work.
Discuss Your ArchitectureADFS to Entra ID Migration
Eliminating ADFS as a single point of failure by migrating to Entra ID native authentication, reducing operational overhead and improving resilience.
Tenant Consolidation
Consolidating multiple Entra ID tenants after a merger or acquisition into a coherent identity fabric with clear governance boundaries.
Zero Trust Conditional Access
Designing Conditional Access architectures that enforce zero trust principles with continuous access evaluation, token protection, and authentication strength requirements — without creating excessive policy sprawl.
What Every Architecture Engagement Delivers
Comprehensive design documentation covering authentication, authorisation, and Microsoft Entra Verified ID integration
- Tenant topology design including single-tenant, multi-tenant, and resource-tenant patterns
- Directory synchronisation architecture covering Entra Connect, Entra Cloud Sync, and custom provisioning pipelines
- Authentication architecture including Conditional Access frameworks, authentication strength, phishing-resistant MFA, and Microsoft Entra Verified ID for decentralised credential verification
- Authorisation architecture covering RBAC, entitlement management, and dynamic group strategies
- Integration architecture for line-of-business applications, SaaS platforms, and API gateways
- Network architecture for identity including named locations, compliant networks, and Global Secure Access
- High availability and disaster recovery planning for identity services
- Detailed technical design documents with decision logs, dependency maps, and implementation guidance
Frequently Asked Questions
What is the difference between IAM architecture and IAM strategy?
Strategy defines the business objectives, priorities, and roadmap for your identity program. Architecture translates that strategy into technical designs: specifying how tenants are structured, how authentication flows work, how directories synchronise, and how systems integrate. Think of strategy as the 'what and why' and architecture as the 'how'. We recommend completing a strategic advisory engagement before architecture to ensure your designs are anchored to clear business outcomes.
Do you produce documentation that our internal team can implement?
Yes. Every architecture engagement produces detailed technical design documents that include component diagrams, configuration specifications, decision logs explaining why specific patterns were chosen, dependency maps, and implementation sequencing guidance. These documents are designed to be picked up by your internal engineering team or by Entraneer's own engineering practice for implementation.
How do you handle multi-tenant architecture for organisations with multiple business units?
We assess each business unit's independence requirements, regulatory obligations, and collaboration needs to determine the optimal tenant topology. Options range from a single consolidated tenant with administrative unit delegation, through to fully separate tenants with cross-tenant access policies for collaboration. We model the trade-offs of each approach (including licensing cost, operational overhead, and user experience) and recommend the design that best fits your organisation's structure and goals.
Can you design architecture for environments that include non-Microsoft identity providers?
Absolutely. Many of our clients operate in heterogeneous environments with Okta, Ping Identity, SailPoint, or custom LDAP directories alongside Microsoft Entra. We design federation trusts, SCIM provisioning pipelines, and authentication broker patterns that allow these systems to coexist while maintaining a coherent security posture. Our goal is to give you the best architecture for your actual environment, not to force everything into a single vendor stack.
How long does a typical architecture engagement take?
A focused architecture engagement for a single domain (such as Conditional Access design or synchronisation topology) typically takes two to four weeks. A comprehensive identity architecture covering tenant design, authentication, authorisation, integration, and operational readiness usually runs six to ten weeks. Complex multi-tenant or post-acquisition consolidation designs may extend further depending on the number of environments involved.
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