AZ-104 vs AZ-305: Which Azure Exam to Take First (and Why the Order Is Not Optional)

Take AZ-104 first. AZ-104 earns the Azure Administrator Associate certification, and Microsoft requires that certification before it will award you the Azure Solutions Architect Expert certification that AZ-305 leads to. The catch that confuses everyone: this is not enforced at booking. You can sit AZ-305 tomorrow and pass it, and Microsoft will simply hold the Expert certification until you also earn Azure Administrator Associate. So the order is not enforced by the exam scheduler, but it is enforced by the credential, and it is also the order that makes the material easier.

These two exams get compared constantly, usually badly, because most comparisons treat them as difficulty tiers: AZ-104 is the medium one, AZ-305 is the hard one. That framing will actively hurt your preparation. They test different cognitive skills, and plenty of strong Azure administrators fail AZ-305 not because it is harder but because they answered it like an administrator.

The one-line difference

AZ-104 asks how do you configure this. AZ-305 asks which one should you choose, and why.

That sounds like a slogan until you read the official objectives. Nearly every bullet in the AZ-305 skills outline literally begins with the word Recommend: recommend a logging solution, recommend a database service tier, recommend a solution for migrating databases, recommend a caching solution for applications. AZ-104's objectives begin with words like Create, Configure, Manage and Implement. Microsoft is telling you exactly what it wants, in the verbs.

Side by side

What the prerequisite actually says

Microsoft's wording on the Azure Solutions Architect Expert certification page is worth reading literally: "To become a Microsoft Certified: Azure Solutions Architect Expert, you must earn the Microsoft Certified: Azure Administrator Associate certification."

Three things follow from that sentence, and almost every blog post gets at least one of them wrong.

It gates the certification, not the exam. The AZ-305 exam page lists no registration prerequisite. Pearson VUE will happily take your $165 and let you sit it. You will get a pass, and no Expert certification, until the prerequisite is satisfied.

Microsoft names the certification, not the exam number. The prerequisite is Azure Administrator Associate. AZ-104 is simply the exam that currently earns it. That distinction matters if exam codes change, which, as anyone watching the security track this year knows, they do.

AZ-305 is the only required exam for the Expert certification. The certification's own metadata reads "Required exams: AZ-305". AZ-104 enters through the prerequisite certification, not as a second required exam. So people who say "the architect cert takes two exams" are describing the outcome correctly and the mechanism incorrectly.

Can you skip AZ-104 and just take AZ-305?

Mechanically, yes. Strategically, almost never.

The design questions on AZ-305 assume you know what the services do. When a case study asks you to recommend a compute solution for a batch workload with a fixed monthly budget and a four-hour recovery time objective, the exam is testing your judgment, but it is testing judgment on top of a service catalogue you are expected to already hold in your head. If you do not know what an Azure Container Apps environment is, you cannot reason about whether it is the right answer. AZ-104 is where you build that catalogue.

There is one honest exception. If you are a working architect who has been designing on Azure for years and simply never took the administrator exam, sitting AZ-305 first and backfilling AZ-104 afterwards is perfectly reasonable. You will get the certification the moment the second one lands. Just know that you are choosing to defer the credential, not skip a requirement.

Which is harder?

The wrong question, but here is the useful version of the answer.

AZ-104 is harder to prepare for. AZ-305 is harder to think through.

AZ-104 has more surface area: five domains, a lot of portal and CLI detail, and Microsoft's warning that you may face interactive components, meaning hands-on lab tasks. It rewards grinding. You cannot reason your way to the right blade in the portal if you have never opened it.

AZ-305 has less surface area but far less certainty. There is often more than one defensible answer, and the exam wants the one that best fits the stated requirements, including the constraints buried in the case-study scenario. Engineers who are used to being right by knowing things find this uncomfortable, because on AZ-305 you are right by weighing things.

Cost is a good illustration. AZ-104 expects you to know where cost management lives and how to apply a budget. AZ-305 expects you to recommend a data storage solution that balances features, performance, and costs, which is an actual tradeoff with no single correct service. That habit of thinking about the bill as a design input rather than an afterthought is the architect's job, and it is why teams that track what their cloud spend is actually doing tend to produce better AZ-305 candidates than teams who discover the number at the end of the quarter.

The case-study rule that catches people out

Microsoft does not publish which exams contain case studies, so nobody can honestly promise you AZ-305 will have them. What is documented is how they work, and one rule does real damage:

You can reread the scenario as often as you like while you are working on that case study's questions. But once you leave a case study, you cannot go back to its questions.

Case studies are not timed separately, and the number in your exam is shown on the introduction screen. So the failure mode writes itself: you feel the clock, you push through the case faster than you should, you move on, and then you realize you misread the recovery point objective. That door is shut. Read the requirements twice, answer every question in that case, and only then move on.

What order should you actually study in?

1. AZ-900 only if Azure is genuinely new to you. It is not a prerequisite for anything, it costs $99 rather than $165, and it is the one Azure certification that never expires. If you already work in Azure, skip it.
2. AZ-104. Build the service catalogue. Lead with identity and governance, which is tied for the heaviest domain at 20 to 25 percent and is the one most study plans underweight because outdated guides still list it at 15 to 20 percent.
3. AZ-305. Now learn to choose. Lead with design infrastructure solutions, at 30 to 35 percent the largest domain on the exam, then business continuity, which Microsoft raised to 15 to 20 percent in 2023 and which almost everyone skips.

If you want the detail on each, we keep a current breakdown of the AZ-104 exam objectives and practice questions and of the AZ-305 exam objectives and practice questions, both built from Microsoft's live study guides rather than the retired blueprints still circulating on the big prep sites.

One warning about study material for both

Check the date on anything you buy or read.

For AZ-104, the domain weights changed in 2023, and two domains were renamed. Pluralsight's AZ-104 path currently publishes both the current and the retired weight lists on the same page. If you follow the old one, you will over-invest in virtual networking, which people still believe is the biggest domain at 25 to 30 percent when it is now one of the lightest at 15 to 20 percent.

For AZ-305, the weights changed on August 7, 2023, and the old blueprint is still everywhere. Worse, Whizlabs' current AZ-305 guide invents four domain names that do not exist on Microsoft's outline, and states the exam is 150 minutes with 65 questions, neither of which appears in any Microsoft document.

Both exams also carry an "updated April 17, 2026" banner that is close to meaningless. On AZ-305, the entire published change log is a single row: the phrase "Microsoft Azure solutions architect" became "Azure solutions architect". On AZ-104, every functional group in the change log is marked "No change", and the only substantive edit is that Azure Disk Encryption became encryption at host. Nobody needs to rebuy anything because of April 2026, whatever the banner implies.

The honest summary

Take AZ-104, then AZ-305. Not because a scheduler forces you to, but because the Expert certification will not be issued otherwise, and because the design exam assumes the knowledge the administrator exam builds. Budget more calendar time for AZ-104 and more thinking time for AZ-305. And when you practice, practice the right skill for each: recall and configuration for one, tradeoffs under stated constraints for the other.

The most efficient way we know to do that is to stop drilling somebody else's question bank and generate questions from the material you are actually reading. Upload your Microsoft Learn notes, your architecture decision records or your prep PDF, and let the AI write fresh exam-style questions from it. A miss then points at a service you have not understood, rather than an answer letter you have not memorized yet.