Microsoft Azure Solutions Architect Expert (AZ-305): The AZ-104 Prerequisite, Cost, and Free Renewal

Most certifications on this site can be earned in a single sitting. This one cannot, and the reason is the single most important fact about it. AZ-305 is the exam behind the Azure Solutions Architect Expert credential, but passing AZ-305 by itself earns you nothing but a passed exam. Microsoft will not grant the Expert certification until you also hold a separate certification first. Get that dependency wrong and you can ace a hard design exam and still have no certification to show for it. This page leads with that prerequisite, then covers the real all-in cost, the exam, and the renewal model, checked against Microsoft Learn on the date at the top.

The prerequisite that catches people out

Microsoft’s certification page states it plainly: to become a Microsoft Certified: Azure Solutions Architect Expert, you must earn the Microsoft Certified: Azure Administrator Associate certification. That associate credential is the one behind AZ-104. So the honest path to this Expert badge is two exams in sequence: AZ-104 first, then AZ-305. Score 700 or better on AZ-305 without the AZ-104 certification on your transcript, and the Expert certification does not post; you are holding a passed exam and a missing prerequisite.

There is a timing wrinkle worth planning around. AZ-104 is itself a one-year certification (see its own renewal treadmill), so it can lapse, and Microsoft’s pages do not spell out whether an expired AZ-104 still satisfies the prerequisite when you pass AZ-305. The clean sequence removes the question: earn or renew AZ-104, confirm it shows as active on your Learn profile, then book AZ-305. Once the Expert certification has posted, the dependency ends: Microsoft’s renewal FAQ says an expert certification does not expire just because its associate prerequisite does.

Who should take it, and who should wait

This is a senior credential for people already doing Azure architecture: translating business requirements into designs across compute, networking, storage, monitoring, and security, and advising the administrators, developers, and security engineers who build them. Microsoft’s audience profile assumes advanced experience across Azure administration, Azure development, and DevOps. That is not a starting point; it is a mid-to-senior engineer consolidating a role they already occupy.

Skip it, or rather wait, if you do not yet hold AZ-104 and do not have real Azure hours behind you. The exam is a design exam: it hands you case studies and asks you to choose between defensible architectures under stated constraints, which is unforgiving to anyone who has only read about the services. If your Azure vocabulary is still forming, start at AZ-900, then earn AZ-104, and treat AZ-305 as the third step, not the first. If your architecture work lives in another cloud, the direct counterparts are AWS Solutions Architect Associate one tier down in the AWS stack and Google Professional Cloud Architect at the same professional tier in Google Cloud.

What it costs all-in

The AZ-305 exam is $165, Microsoft’s standard Associate and Expert price, set per country and currency with tax added in some regions. But quoting $165 as the cost of this certification is the mistake the prerequisite creates. The real all-in floor is two exams, AZ-104 at $165 plus AZ-305 at $165, so $330 is the honest number to earn the Expert badge from a standing start. There is no free retake at either stage; a failed attempt is another $165 after a 24-hour wait, with 14-day waits between later attempts, so $660 is the prudent cushion if you want to survive a bad day on either exam.

Prep is where Microsoft is generous. The AZ-305 learning path on Microsoft Learn is free, the study guide is the literal blueprint, and Microsoft posts a free official practice assessment. Because this is a design exam rather than a hands-on one, case-study practice matters more than lab time; a well-reviewed third-party course at $15 to $20 on sale plus a scenario-heavy question bank at $15 to $25 is a reasonable add, so $0 to $45 in prep per exam. See how the all-in figure ranks against every other credential on the ROI Index.

The exam itself

Microsoft does not publish a fixed question count and says its exams typically carry 40 to 60 questions. Associate and expert exams run 100 minutes, or 120 when lab tasks are included, and Microsoft deliberately does not publish which exams carry labs; AZ-305 leans on case studies, the multi-question scenarios that mimic real architecture decisions. Scores are reported on a 1 to 1,000 scale and 700 passes, and Microsoft publishes no pass rate, so any figure you see quoted is invented.

The current skills outline is dated April 17, 2026. Four domains make up the exam, weighted in bands rather than exact percentages: design identity, governance, and monitoring solutions (25 to 30 percent), design data storage solutions (20 to 25 percent), design business continuity solutions (15 to 20 percent), and design infrastructure solutions (30 to 35 percent). The bands bracket 100 percent. Note the shape: infrastructure design carries the largest slice, but identity, governance, and monitoring together with data storage make up more than half the exam, so a candidate who prepped only on virtual machines and networking is aiming at the wrong half.

Renewal math over 9 years

The renewal model is the same free annual assessment that Microsoft applies to its associate tier, confirmed for expert-level certifications by Microsoft’s own expiration policy: role-based associate and expert certifications are valid for exactly one year, and you renew at no cost by passing an online, open-book assessment on Microsoft Learn in the six months before expiry. Miss the window and there is no grace period; the certification expires and the only way back is the full $165 exam again.

So the fee math over nine years is $330 once (the two exams to earn it), then $0 in renewal fees. Microsoft’s renewal FAQ settles a common worry: the Expert certification does not expire if AZ-104 lapses, because each certification is renewed separately. Keeping the Expert badge active takes one annual AZ-305 assessment; keeping AZ-104 too is a second, optional clock most architects run anyway, since associate postings ask for it by name. The most expensive mistake this credential offers is not the exam price; it is missing the AZ-305 window and re-buying a $165 exam you already passed. Certification renewal costs explained sets this fee-free-but-frequent model against the vendors that charge to keep a credential current.

Nine-year cost of ownership: $330, the two exams once, then free annual renewal assessments and $0 in renewal fees, provided you never miss a renewal window and have to re-buy an exam.

What it does for the occupation you are entering

AZ-305 maps to the computer network architect occupation (BLS code 15-1241), the category built around designing and building networks and systems, which is a fair description of what this exam tests: secure, resilient, well-governed Azure architecture. The panel on this page shows that occupation’s national median wage and headcount as context for the field, not a premium the badge pays on its own. What AZ-305 concretely buys, on top of the AZ-104 it requires, is the expert-tier line that appears in Azure architect and lead-engineer postings at Microsoft-stack employers, plus evidence you can defend design trade-offs rather than just administer resources. What that converts to depends on the role, the market, and the years behind the badge.

Common mistakes

Booking AZ-305 without AZ-104. This is the defining trap. The Expert certification will not post until the associate prerequisite is on your transcript. Confirm AZ-104 shows as active on your Learn profile before you schedule.

Treating $165 as the price. From a standing start the cost is two exams, so $330 minimum, and more if either needs a retake. Budget for the pair, not the single sitting.

Assuming AZ-104 renews the Expert badge. It does not, in either direction. The Expert certification has its own one-year clock and its own free assessment; renewing AZ-104 does nothing for it, and letting AZ-104 lapse does not take it down. Set a reminder for the AZ-305 window specifically, and a second one if you also want to keep AZ-104 current.