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AZ-305 Exam - Designing Microsoft Azure Infrastructure Solutions
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Azure Solutions Architect Expert AZ-305: Current 2026 Architecture Path and AZ-104 Prerequisite
Within the broader Microsoft certification portfolio, Microsoft Certified: Azure Solutions Architect Expert remains an active expert certification for professionals who design cloud and hybrid solutions across compute, networking, storage, monitoring, identity, governance, security, business continuity, and data platforms. The required exam is AZ-305, and Microsoft updated the English certification and exam content on April 17, 2026.
Passing AZ-305 alone does not award the certification. Microsoft currently requires an active Azure Administrator Associate certification as the prerequisite. This matters for candidates using old roadmaps that treat AZ-305 as a standalone badge. The architect credential combines proven Azure administration with advanced design judgment.
Start With the Prerequisite, Not the Expert Exam
If you do not hold active Azure Administrator Associate, earn or renew it before expecting the Expert certification. AZ-104 provides the operational foundation architects rely on when evaluating compute, storage, networks, identity, monitoring, and governance.
Architects do not need to perform every administrative task daily, but they must understand how designs can actually be implemented and operated.
Design Identity, Governance, and Monitoring Together
The current AZ-305 guide includes identity, governance, and monitoring as one major design area. Plan resource hierarchy, subscriptions, management groups, RBAC, policy, landing zones, monitoring, logging, and operational ownership according to business boundaries.
A secure architecture should make administration auditable and scalable. Avoid designs that depend on one subscription, one global administrator, or undocumented exceptions.
Data Storage Design Is a Business Decision
Choose storage and database patterns based on structure, consistency, availability, performance, scale, backup, compliance, and integration. Architecture questions frequently have several technically valid answers; the constraint determines the right one.
Document data lifecycle, ownership, retention, encryption, access, and recovery. A storage service is only one component of a trustworthy data architecture.
Business Continuity Must Be Designed Before Failure
AZ-305 includes business continuity and disaster recovery. Define RTO, RPO, failure domains, backup, replication, failover, restore, and validation before selecting a multi-zone or multi-region design.
Test the recovery process. A diagram with redundant components does not prove that applications, identities, DNS, data, and operations recover within the business requirement.
Infrastructure Design Includes Compute and Networking Tradeoffs
Compare virtual machines, containers, serverless and managed services, virtual networks, private access, load balancing, hybrid connectivity, and service integration according to control, scale, availability, latency, security, and operational effort.
The PrepAway deep dive on AZ-305 infrastructure design can supplement scenario practice. Always bring the discussion back to requirements rather than product preference.
Use the Well-Architected Framework as a Review Lens
Current role guidance aligns designs with the Azure Well-Architected Framework and Cloud Adoption Framework. Review reliability, security, cost optimization, operational excellence, performance efficiency, and organizational governance as complementary concerns.
A design can be secure but unaffordable, resilient but impossible to operate, or performant but weakly governed. Expert architecture requires balancing the full system.
Migrations Need Phases and Reversibility
Architecture includes migration planning for applications, data, identity, and network dependencies. Inventory the current state, choose rehost/replatform/refactor approaches, test uncertain assumptions, and define cutover and rollback.
Use staged migration where it reduces risk. The PrepAway article on Azure architecture strategy can help organize these tradeoffs.
Architects Coordinate Specialist Roles
Solutions architects work with network engineers, security engineers, database administrators, developers, data engineers, and operations teams. The architect should know when specialist depth is required and capture those decisions in the design.
For network-heavy designs, the Azure Network Engineer Associate path provides deeper implementation context. Architecture is collaborative, not a claim to perform every specialist role.
Landing-zone design should account for organizational structure, policy inheritance, shared services, connectivity, identity, logging, and delegated administration. A well-designed subscription model reduces friction later because teams know where workloads belong and which controls are inherited automatically.
Identity architecture should include workforce users, external identities, service principals, managed identities, privileged administrators, and emergency access. Design the lifecycle as well as the authentication method. Orphaned privileged identities can undermine an otherwise strong cloud architecture.
Data architecture should connect operational databases, analytics, messaging, storage, integration, and AI consumers. The architect should define authoritative sources, movement, security, retention, and recovery. Avoid creating many copies of data simply because each service can store its own version.
Application integration patterns should include synchronous APIs, queues, events, workflow orchestration, caching, and data pipelines. Select the pattern according to coupling, latency, ordering, retry, and consistency needs. Architecture questions often hinge on these system qualities rather than a single Azure product feature.
Reliability design should consider dependencies outside Azure too. DNS providers, identity systems, SaaS services, on-premises networks, third-party APIs, and client connectivity can all become part of the application’s failure domain. A multi-region Azure design can still fail if one external dependency is singular.
Cost optimization should include resource sizing, managed-service tradeoffs, reservations or savings mechanisms where relevant, storage lifecycle, data transfer, and operational labor. Architecture should minimize total cost of ownership, not merely monthly compute price.
Security architecture should integrate threat modeling, Zero Trust, network segmentation, private access, data protection, secure software delivery, and Defender or Sentinel visibility according to risk. The architect should know when to involve a specialist rather than designing security through assumptions.
Governance documentation should capture architectural decisions and rejected alternatives. An architecture decision record can explain why one database, network, or resilience pattern was selected and what conditions would justify revisiting it later.
For final preparation, write one complete architecture proposal for a hybrid application. Include business requirements, identity, networking, compute, data, monitoring, security, deployment, migration, BCDR, cost, governance, and operations. Then introduce a regional outage and a compromised administrator and explain how the design responds.
Performance architecture should be measured against user and system requirements. Choose caching, distribution, compute scale, data partitioning, or asynchronous processing only when they address a defined bottleneck. More components can improve performance while increasing cost and failure modes.
Operational excellence should include deployment strategy, incident ownership, observability, runbooks, resource standards, and change control. A design is incomplete if operators cannot tell whether it is healthy or recover it without the original architect.
Sustainability can align with efficiency through right-sizing, autoscaling, managed services, efficient data movement, and reduced idle capacity. Treat it as another design lens rather than a separate environmental appendix.
Architecture reviews should include assumptions and expiry dates. If a design relies on a specific traffic volume, regulatory interpretation, vendor capability, or organizational structure, record that assumption so future teams know when the architecture should be reevaluated.
Before scheduling AZ-305, confirm that Azure Administrator Associate is active in your Microsoft Learn profile. Passing the expert exam without the prerequisite does not produce the Expert certification until the current prerequisite requirement is satisfied.
Shared platform services should be treated as products with owners and service levels. Central networking, DNS, identity integration, logging, CI/CD, secrets, and policy can reduce duplicated work, but they also create dependencies that need capacity, security, and recovery plans.
Architects should design for organizational change. Mergers, divestitures, new regions, regulatory changes, and rapid product growth can invalidate original assumptions. Use modular boundaries and documented ownership so parts of the architecture can evolve without full redesign.
API and integration architecture should include authentication, throttling, versioning, retry, idempotency, and observability. An enterprise solution often fails at integration boundaries rather than inside the core Azure service.
Migration economics should include temporary duplication. During phased migration, organizations may pay for old and new environments simultaneously, run synchronization, and maintain two operational models. Include those transition costs in architecture recommendations.
For final exam practice, force yourself to reject at least one plausible design option in each scenario and explain why. AZ-305 often distinguishes answers through a subtle requirement such as operational effort, availability, governance, or migration constraint rather than obvious technical impossibility.
Architecture communication should produce artifacts that survive the meeting: diagrams, assumptions, decision records, risk notes, ownership, and validation criteria. A design that only exists in the architect’s explanation cannot be reliably implemented or audited.
Review the current AZ-305 guide immediately before the exam because Microsoft can update service recommendations while the overall certification name remains unchanged.
Use a final design review to explain how one Azure solution meets business goals, identity, governance, data, network, compute, monitoring, security, cost, resilience, and migration requirements. Then state which assumptions would force a redesign. That exercise mirrors expert-level architectural judgment more closely than memorizing service comparison tables.
Expert preparation should also include a clear operations handoff. Name the team that owns alerts, backups, network changes, identity policy, deployment, and cost review so the architecture can be sustained after implementation rather than depending permanently on the original designer.
Final Readiness Check
- Hold active Azure Administrator Associate and pass AZ-305.
- Use the AZ-305 objectives updated April 17, 2026.
- Practise identity/governance/monitoring, storage, business continuity, and infrastructure design as tradeoff decisions.
- Use Well-Architected and Cloud Adoption frameworks as review lenses.
- Build case studies that include migration, failure, cost, security, and operational ownership.
Azure Solutions Architect Expert is a design credential, not a product-memory test. Strong candidates can translate business requirements into architectures that are implementable, governable, secure, resilient, cost-aware, and supportable by the teams that inherit them.
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