AZ-305 Study Guide: Pass the Azure Architect Exam

AZ-305, Designing Microsoft Azure Infrastructure Solutions, is the design half of the Azure Solutions Architect Expert credential. You need a score of 700 to pass, the exam runs through Pearson VUE, and there are no prerequisites to sit it. One catch trips people up: you still need AZ-104 to actually earn the certification. This guide walks through what the exam tests, how long to plan for, and where people lose points.

What's on the AZ-305 exam

The exam is built around four design areas. Microsoft expresses the weightings as ranges and these are the midpoints, so treat them as a guide to where to spend your time, not a hard contract.

Infrastructure is the biggest slice, so it deserves the most attention. This is where you pick compute (VMs, App Service, AKS, Functions, Container Apps), design networking and connectivity, and decide how application tiers fit together. The questions are scenario based, so it's less "what does this service do" and more "given these constraints, which design holds up."

Identity, governance, and monitoring is the second heaviest area. Expect Microsoft Entra ID, conditional access, managed identities, RBAC versus Azure Policy, management groups, and how you'd monitor and log a solution end to end. Knowing when to reach for a managed identity instead of a stored secret comes up a lot.

Data storage covers picking the right store for the job: relational versus NoSQL, Azure SQL options, Cosmos DB consistency levels, Storage account tiers and redundancy. The exam wants you to match a workload's access pattern and durability needs to a storage choice and justify it.

Business continuity is the smallest domain but easy to underrate. It's backup, disaster recovery, recovery objectives, high availability across zones and regions, and the tradeoffs between them. The scenarios usually hand you an RTO or RPO and ask for the cheapest design that still meets it.

How hard is AZ-305 and how long to prepare

This is an Expert-level exam, and it reads like one. The hard part isn't recalling facts, it's that almost every question is a design scenario with several plausible answers where one is "best" given the cost, latency, or compliance constraint buried in the prompt. If you've never made these calls on a real project, that's the gap to close.

If you already work as an Azure engineer or architect and design solutions day to day, four to six weeks of focused study is realistic. You're mostly mapping what you already do to Microsoft's preferred patterns and filling holes in the services you don't touch often.

If you're coming from AZ-104 and have operations experience but haven't done much greenfield design, plan for eight to ten weeks. The mental shift from "deploy and run this" to "choose between three valid designs" is the real work. Coming in cold to Azure, AZ-305 is the wrong starting point. Do AZ-104 first, both because the design exam assumes that operational knowledge and because you need AZ-104 to claim the certification anyway.

A study plan that works

Weeks 1 to 2: map the territory. Start with the official AZ-305 study guide on Microsoft Learn and the exam page. Read the skills-measured outline and be honest about which of the four domains you're weak in. Do a first pass through the Microsoft Learn paths for AZ-305 so you've seen every service the exam can ask about, even the ones you'll never use at work.

Weeks 3 to 4: go deep on design tradeoffs. This is where the exam is won. For each domain, stop memorizing service definitions and start collecting decision rules. When do you pick Azure SQL Database over SQL Managed Instance? Zone-redundant versus geo-redundant storage, and what each costs you? Conditional access versus per-app rules? Build a personal cheat sheet of "if the scenario says X, lean toward Y." The Azure Well-Architected Framework and the Architecture Center reference designs are gold here because they're literally the patterns the exam grades against.

Weeks 5 to 6: get hands on. Spin up a free or pay-as-you-go subscription and actually build small versions of these designs. Stand up a VNet with peering, attach a managed identity to a Function and pull a secret from Key Vault, configure a storage account's redundancy, set up a backup policy. You retain design reasoning far better after you've clicked through the real portal once.

Final week: practice testing under pressure. Switch to full focus on exam-style questions. Work scenario sets, and for every one you miss, write down why the right answer beat the others. You're training the instinct to spot the one constraint that decides the question.

What to focus on and where people lose points

Don't memorize service limits and pricing tables. The exam rarely rewards trivia. It rewards knowing the tradeoff a scenario is probing.

Read the whole question before looking at the options. AZ-305 prompts hide the deciding detail in the middle: a compliance requirement, a latency ceiling, a budget cap, a "must survive a region failure." Two answers will both technically work and only one respects that buried constraint.

A few patterns that catch people every cycle:

• Reaching for a stored secret or service principal when a managed identity is the intended answer.
• Confusing Azure Policy (governance and enforcement) with RBAC (who can do what). The exam tests that you know which tool solves which problem.
• Overbuilding business continuity. If the RPO is generous, geo-redundant backup may beat a full active-active design on cost, and the cheapest design that meets the requirement is usually "best."
• Picking the wrong Cosmos DB consistency level for the described access pattern.

One more thing: AZ-305 was updated on April 17, 2026, so make sure any material you study reflects the current skills outline. Older guides drift, and a service that was emphasized two years ago may have been replaced by a newer recommendation.

Practice the right way

Reading patterns gets you partway. The thing that moves the needle on a scenario-based exam is doing scenario questions until the "which constraint decides this" reflex is automatic. Work realistic, exam-style questions, and treat every wrong answer as a lesson in why one design beat three others.

You can practice AZ-305 with realistic exam-style questions on Cert Made Easy, or browse the full Azure catalog if you're also lining up AZ-104. Use them to find your weak domain early, then go back to the docs for that area instead of re-reading what you already know.

Why the certification is worth it

Azure architect skills stay in demand. In one analysis of about 112,000 open positions listing Azure certifications as of May 2025, 29% referenced the Azure Solutions Architect Expert credential, and 21% of technical recruiters ranked it as the badge most likely to trigger outreach. Pay for cloud and solutions architect roles is commonly cited in the low-to-mid six figures in the US, for example an average around $155,148 per year for cloud solutions architects (SimplyHired, 2026) and roughly $154,989 for cloud architects (Indeed, May 2026), with broad ranges depending on company and location. Treat those as ballpark figures from job-market sources, not a guarantee.

FAQ

What is the passing score for AZ-305? 700, on Microsoft's scaled scoring. That's not a percentage, so don't read it as "70% correct."

Do I need AZ-104 before AZ-305? There are no prerequisites to sit the AZ-305 exam itself. But AZ-104 is required to earn the Azure Solutions Architect Expert certification, so most people do AZ-104 first.

How many questions are on AZ-305 and how long is it? Microsoft doesn't publish the exact question count or time limit for this exam, and those details can change, so check the official exam page when you book.