- Domain 4 (Design infrastructure solutions) carries the most weight at 30-35%, so prioritize compute and networking design.
- Domain 1 (identity, governance, monitoring) is close behind at 25-30% and often decides borderline scores.
- You need 700/1000 to pass, and the exam runs 100 minutes for the standard 40-60 question format.
- AZ-305 requires holding the Azure Administrator Associate certification before you can earn the Expert title.
What AZ-305 Actually Tests
AZ-305 is not a knowledge quiz about Azure services - it's a design exam. Microsoft is checking whether you can take a set of business requirements, translate them into an architecture, and defend trade-offs between cost, resilience, security, and performance. If you've only used Azure hands-on without thinking about "why did I choose this SKU over that one," this exam will expose the gap quickly. For a broader breakdown of exam difficulty relative to other Azure certifications, see our AZ-305 difficulty guide, and for a full walkthrough of what the certification represents, check the AZ-305 Certification overview.
This guide is built around one goal: passing on your first attempt by studying in proportion to how Microsoft actually weights the content. That means spending real time on the two heaviest domains instead of splitting your prep evenly across all four.
The Four Domains Ranked by Weight
Microsoft publishes four official domains for AZ-305, and their weightings should directly shape your study hours. Here's how they break down, heaviest first:
| Domain | Weight | Study Priority |
|---|---|---|
| Design infrastructure solutions | 30-35% | Highest - compute, app architecture, networking, migrations |
| Design identity, governance, and monitoring solutions | 25-30% | High - near-equal weight to Domain 4 |
| Design data storage solutions | 20-25% | Medium - deep but narrower scope |
| Design business continuity solutions | 15-20% | Lower - smaller but still test-critical |
Combined, Domains 1 and 4 account for well over half the exam. If your study plan gives each domain "equal time," you're misallocating effort. For a deep dive into every objective under each domain, our AZ-305 Exam Domains 2026 guide breaks down all four content areas in detail.
Domain 4: Design Infrastructure Solutions (30-35%)
This is the largest domain and covers the broadest surface area - you need fluency across compute choices, application architecture patterns, network topology decisions, and migration strategy.
- Choosing between VMs, App Service, containers (AKS/Container Apps), and Functions based on scenario requirements
- Designing hub-and-spoke or Virtual WAN network topologies with appropriate connectivity (VPN, ExpressRoute, private endpoints)
- Migration strategy design using Azure Migrate and assessment tooling for on-prem to cloud moves
- Application architecture patterns: microservices, event-driven design, and messaging (Service Bus vs Event Grid vs Event Hubs)
Domain 1: Design Identity, Governance, and Monitoring Solutions (25-30%)
Almost as heavily weighted as Domain 4, this domain tests whether you can design secure, well-governed environments - not just deploy resources.
- Azure AD (Microsoft Entra ID) design: conditional access, hybrid identity, external identities
- RBAC vs Azure Policy vs management groups for governance at scale
- Monitoring architecture using Azure Monitor, Log Analytics workspaces, and alerting design
- Landing zone and subscription design for multi-team, multi-environment organizations
For dedicated study material mapped directly to each objective, see the standalone guides for Domain 1: Design identity, governance, and monitoring solutions and Domain 4: Design infrastructure solutions.
Domain 2: Design Data Storage Solutions (20-25%)
Narrower in scope than Domains 1 and 4, but still requires precise knowledge of when to use each data service.
- Relational vs non-relational storage decisions (Azure SQL, Cosmos DB, Storage tables)
- Data integration design with Azure Data Factory and Synapse pipelines
- Storage redundancy tiers (LRS, ZRS, GRS, GZRS) mapped to durability requirements
Domain 3: Design Business Continuity Solutions (15-20%)
The smallest domain by weight, but questions here are precise and scenario-heavy around recovery objectives.
- Backup design using Azure Backup and Recovery Services vaults
- Disaster recovery with Azure Site Recovery across regions
- Mapping RTO/RPO requirements to specific architecture choices
Full domain-specific guides for the remaining two areas are available at Domain 2: Design data storage solutions and Domain 3: Design business continuity solutions.
Question Format and Exam Mechanics
Microsoft doesn't publish a fixed question format list in advance, but the AZ-305 exam sandbox draws from a known set of item types: active screen, build list, case study, drag-and-drop, hot area, and multiple choice, with the possibility of labs. Most Microsoft certification exams contain 40-60 questions, and AZ-305 falls into the associate/expert role-based category, which means 100 minutes of exam time and 120 minutes of total seat time (the extra time covers the NDA, tutorial, and surveys).
Key Takeaway
Case studies are the format most candidates underestimate. They present a multi-paragraph business scenario followed by several questions, and you can't skip back to re-read easily once you move past certain sections - read the entire scenario carefully before answering the first question tied to it.
One detail unique to Microsoft's newer exam experience: Microsoft Learn access is available during associate/expert exams within the Learn domain, while the timer keeps running. This isn't a substitute for preparation - searching documentation mid-exam under time pressure is a poor strategy - but it's worth knowing it exists rather than discovering it cold on exam day.
A passing score is 700 out of 1000. Microsoft does not publish exact scoring weights per question or per domain, and it does not disclose pass rates publicly. If you want a realistic view of how difficult candidates generally find this exam, our AZ-305 Pass Rate data breakdown looks at what's actually known versus speculated.
Registration, Pricing, and Prerequisites
AZ-305 is delivered through Pearson VUE, either at a physical test center or via online proctoring from home or office. Pricing is region-based; in the United States, the exam is typically $165 plus applicable taxes, and there's no separate member/non-member pricing tier like some other certification bodies use. For a full cost breakdown including what to budget for retakes and renewal, see AZ-305 Certification Cost 2026.
This prerequisite structure means AZ-305 assumes you already have hands-on administration experience - networking, virtualization, and identity fundamentals should already be second nature. If you're unclear on how this exam fits into the broader Azure certification path, our explainer on What Is AZ-305? and the companion piece on What Is AZ-305 Certification? lay out the full context.
The current version of the exam reflects skills measured as of April 17, 2026, and Microsoft has not listed a retirement date. That's worth checking periodically, since Microsoft updates exam content on a rolling basis and objective weightings can shift between versions.
A Domain-Weighted Study Timeline
Generic study advice tells you to spend equal time each week on "review." AZ-305 preparation works better when your calendar mirrors the domain weightings directly - more weeks on Domains 1 and 4, fewer on Domain 3.
Domain 4: Infrastructure Foundations
- Compute service selection scenarios (VM vs App Service vs containers vs Functions)
- Network topology design: hub-and-spoke, VPN Gateway, ExpressRoute, Private Link
- Build 2-3 sample architectures from scratch using case-study-style prompts
Domain 4 Continued + Migration
- Azure Migrate assessment and migration tooling
- Application architecture patterns and messaging service selection
Domain 1: Identity and Governance
- Microsoft Entra ID design: conditional access, hybrid identity, B2B/B2C scenarios
- Management group and subscription governance hierarchies
- RBAC vs Azure Policy decision scenarios
Domain 1 Monitoring + Domain 2 Start
- Azure Monitor and Log Analytics workspace design
- Relational vs non-relational data service selection
Domain 2: Data Storage
- Storage redundancy tiers and durability mapping
- Data integration pipeline design (Data Factory, Synapse)
Domain 3: Business Continuity + Full Review
- Backup and Site Recovery design scenarios
- RTO/RPO mapping exercises
- Full-length practice exam simulating case study format
This eight-week structure gives roughly three weeks to Domain 4, two and a half to Domain 1, one to Domain 2, and one to Domain 3 - proportional to how the exam actually weights each area. Adjust the total length based on your existing Azure administration experience, but keep the ratio intact.
Concrete Topics You Must Master
Beyond the domain outlines, here are the specific decision points that show up repeatedly in AZ-305-style scenarios:
- Compute selection logic: Given constraints like "team wants minimal ops overhead" or "workload has unpredictable scale," pick the correct compute tier and justify it.
- Network segmentation: Design NSGs, Azure Firewall placement, and route tables for multi-tier applications spanning subnets.
- Identity federation: Decide when to use hybrid identity with Azure AD Connect versus a cloud-only identity model.
- Governance at scale: Apply Azure Policy initiatives and management group hierarchies across multiple subscriptions with different compliance needs.
- Storage redundancy trade-offs: Match LRS, ZRS, GRS, and GZRS to specific durability and regional failure requirements.
- Backup and DR architecture: Translate stated RTO/RPO numbers into concrete Azure Backup and Site Recovery configurations.
Who Hires AZ-305-Certified Architects
AZ-305 is aimed at professionals moving into or already working in solutions architect roles - not entry-level cloud administrators. Because it requires the Azure Administrator Associate as a prerequisite, employers generally view it as validation that someone can both operate and design Azure environments. Cloud consulting firms, managed service providers, and enterprise IT departments running hybrid or multi-region Azure environments are the most common hirers for roles referencing this credential. If you're evaluating whether this certification lines up with your career goals, see AZ-305 Jobs for role examples, AZ-305 Salary Guide 2026 for compensation context, and Is the AZ-305 Certification Worth It? for a broader ROI analysis.
If you're still deciding whether AZ-305 is the right credential name and scope for what you're trying to prove, our shorter reference pieces - AZ-305 Meaning, What Does AZ-305 Stand For?, and What Is A AZ-305? - clarify the naming and positioning within Microsoft's certification catalog.
After You Pass: Renewal and Next Steps
Microsoft role-based certifications, including AZ-305, expire after 12 months. Renewal is free and done by passing an online Microsoft Learn renewal assessment during your renewal window - no need to retake the full proctored exam. Mark your calendar as soon as you pass, since the renewal window opens before the actual expiration date and missing it means the certification lapses.
For structured coursework beyond self-study, AZ-305 Training options range from Microsoft Learn's free modules to instructor-led courses, and pairing structured training with scenario-based practice exams tends to close knowledge gaps faster than either approach alone. Revisit our core AZ-305 Study Guide periodically as you progress - it's built to be the reference you return to across your entire prep timeline, not just a one-time read.
FAQ
You can sit for AZ-305 without it, but to actually earn the Microsoft Certified: Azure Solutions Architect Expert title, you must hold Azure Administrator Associate in addition to passing AZ-305.
Microsoft states most certification exams typically contain 40-60 questions, though the exact count can vary by exam version and isn't published as a fixed number for AZ-305 specifically.
Associate/expert role-based exams without labs provide 100 minutes of exam time and 120 minutes of total seat time, which includes the tutorial and post-exam survey.
You need a scaled score of 700 or greater out of 1000. Microsoft does not publish how many questions you can miss to still hit that threshold.
Start with Design infrastructure solutions (30-35%) since it's the largest domain, followed closely by Design identity, governance, and monitoring solutions (25-30%), as together they cover more than half the exam content.