AZ-305 Study Guide 2026: How to Pass the Solutions Architect Expert Exam

AZ-305 is the capstone of the Azure certification path: AZ-900 for fundamentals, AZ-104 for hands-on administration, then AZ-305 for architecture-level design judgment. Microsoft strongly recommends holding AZ-104 (or equivalent hands-on experience) before attempting it — and for good reason. AZ-305 is a design exam. You are not clicking through a portal or writing a script; you are reading a business scenario and choosing the best architecture, the same way you would in a real design review.

The 4 Exam Domains (Updated April 2026)

Microsoft updated this exam's domain weighting on 17 April 2026. Infrastructure design is now the single largest domain at nearly a third of the exam, with Business Continuity carrying more weight than it used to.

• ●Design identity, governance, and monitoring solutions — 25–30% (Microsoft Entra ID architecture, RBAC design, management group hierarchy, Azure Policy strategy, and monitoring/logging architecture)
• ●Design data storage solutions — 20–25% (choosing between relational, NoSQL, and data lake storage; data integration patterns; storage account design decisions)
• ●Design business continuity solutions — 15–20% (backup strategy, disaster recovery architecture, high availability patterns across regions)
• ●Design infrastructure solutions — 30–35% (compute solution selection, application architecture, network topology, and migration strategy)

Why This Exam Feels Different from AZ-104

AZ-104 tests whether you can operate Azure — configure a VNet, assign an RBAC role, set up a backup policy. AZ-305 tests whether you can design a solution before any of that configuration happens. Questions describe a business requirement — cost constraints, compliance needs, expected traffic, disaster recovery targets — and ask you to choose the architecture that satisfies all of them simultaneously. There is rarely one "correct" service; there is a best trade-off given the stated constraints. Study accordingly: instead of memorizing configuration steps, practice reading a scenario, listing its constraints, and eliminating architectures that violate at least one of them.

The 8-Week Study Plan

This plan assumes AZ-104-level familiarity already exists and focuses on design judgment rather than re-teaching Azure basics. Budget roughly 6–8 hours per week.

Weeks 1–2 — Identity, Governance & Monitoring

• ●Microsoft Entra ID architecture: hybrid identity, Entra Connect, and conditional access design
• ●Management group and subscription hierarchy design for multi-team, multi-environment organizations
• ●RBAC design patterns: least-privilege role assignment at the right scope
• ●Azure Policy and Azure Blueprints for enforcing governance at scale
• ●Monitoring architecture: Azure Monitor, Log Analytics workspace design (centralized vs distributed)

Weeks 3–4 — Data Storage

• ●Choosing between Azure SQL Database, Cosmos DB, and Azure Storage based on consistency, scale, and access-pattern requirements
• ●Data lake architecture with Azure Data Lake Storage for analytics workloads
• ●Data integration patterns: Azure Data Factory pipelines and event-driven architectures
• ●Storage account design decisions: redundancy tiers (LRS, ZRS, GRS) and access tiers (hot, cool, archive)

Weeks 5–6 — Infrastructure

• ●Compute selection: VMs vs App Service vs AKS vs Azure Functions, mapped to workload characteristics
• ●Network topology design: hub-and-spoke architecture, Azure Firewall placement, ExpressRoute vs VPN Gateway
• ●Application architecture patterns: microservices on AKS, event-driven design with Event Grid or Service Bus
• ●Migration strategy: assessing on-premises workloads and choosing the right Azure Migrate path

Week 7 — Business Continuity

• ●Backup strategy design: Azure Backup policies and retention requirements
• ●Disaster recovery architecture: Azure Site Recovery, RPO/RTO trade-offs, and multi-region failover design
• ●High availability patterns: availability sets vs availability zones vs multi-region deployment

Week 8 — Case Study Practice & Mock Exams

• ●Practice full-length case studies specifically — they combine multiple domains in one scenario and are the format most candidates underestimate
• ●Take two full-length practice exams under real time pressure
• ●Review every wrong answer by identifying which stated constraint you missed, not just which service you should have picked

Exam Day Strategy for a Design Exam

1. 1For case studies, read the requirements section first, then the scenario narrative — you need to know what you're solving for before you read the details
2. 2List every stated constraint (cost, compliance, RTO/RPO, existing infrastructure) before evaluating answer choices — most wrong answers violate exactly one constraint you'll miss if you skim
3. 3When two architectures both technically work, the correct answer is usually the one requiring the least new infrastructure or the smallest operational footprint
4. 4Business continuity questions almost always specify a numeric RPO or RTO — match the answer to that number precisely rather than picking the "most resilient-sounding" option
5. 5Don't second-guess a confident first read on governance/RBAC questions — they test whether you know the correct pattern, and the first instinct from real experience is usually right

After Passing AZ-305

AZ-305 completes the Expert tier of the Azure track alongside AZ-400 (DevOps Engineer Expert). See the full AZ-900 → AZ-104 → AZ-400/AZ-305 certification path for how the two Expert-tier exams complement each other — architecture design paired with delivery pipeline design.

At CloudTechTrainings, our 45-day Azure batch covers AZ-104, AZ-400, and AZ-305 in a single cohort, with real architecture design exercises built into the curriculum rather than treated as a separate track.

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