雲端認證應先考哪項？AWS、Azure 與 Google Cloud 的選擇及備考方法

"Which cloud cert should I do first?" is one of the most common questions in every cloud community. The honest answer is: it depends on three things — which cloud you'll actually use, the role you want, and how much hands-on experience you already have. This post walks through how to decide, and then how to study so you don't waste weeks rewatching videos.

Step 1: Pick the cloud before you pick the cert

Don't choose a provider because a cert looks easy. Choose the one you're most likely to touch at work.

• Your company or target employers already use a cloud? Start there. A cert on the platform you use every day is easier to pass (you get free practice) and easier to talk about in interviews.
• Job listings in your area mention one cloud more than others? Search the roles you want and count. That's better data than any internet opinion.
• Your organisation runs on Microsoft 365, Active Directory or Windows servers? Azure is usually the natural fit.
• You work with data/analytics teams already on BigQuery or Google Workspace? Google Cloud makes sense.
• No signal at all? AWS is a reasonable default simply because it shows up in a lot of job descriptions — but confirm with your own search.

Step 2: Fundamentals or associate?

Each provider has an entry-level "fundamentals" exam and a more hands-on "associate" tier.

Take the fundamentals exam first if:

• You're new to IT or switching careers.
• You're in a non-engineering role (sales, PM, support, finance) and need the vocabulary.
• You want a quick win to build momentum.

Skip straight to an associate exam if:

• You've already deployed things in that cloud — even side projects.
• You're a developer or sysadmin with networking and Linux basics.
• Your goal is a technical job and you'd rather spend the study time on the cert employers ask for.

Fundamentals exams test concepts, billing and shared responsibility. Associate exams test whether you can design or operate something: networking, IAM, storage choices, scaling, troubleshooting.

Step 3: Match the associate cert to the role

• Architect / generalist cloud engineer: AWS SAA-C03, Azure AZ-104, or Google Associate Cloud Engineer.
• Developer: AWS DVA-C02 fits if you build on Lambda, API Gateway and DynamoDB.
• Platform / DevOps: after a cloud associate, look at Terraform Associate (infrastructure as code) and CKA (Kubernetes). Both are cloud-neutral, so they pair with whichever provider you chose.
• Support moving into cloud: fundamentals first, then the admin/associate track on the cloud your employer uses. Your troubleshooting experience counts — put it on your CV next to the cert.

If you want a quick answer for your situation, I built a free picker that asks those three questions (cloud, role, experience) and suggests where to start: Which cloud certification should I get first? — no login.

Step 4: Study with timed practice, not just videos

The most common mistake I see: watching an entire course twice, then booking the exam and discovering you can't answer questions under time pressure. Flip the order.

1. Take a practice quiz on day one

Before studying anything, do a short timed quiz. You'll score badly — that's the point. It shows you which domains you know nothing about, so you study those first instead of everything evenly.

2. Study by domain, then re-quiz that domain

Every exam guide lists domains (for example security, networking, storage, billing). Work through one, then immediately answer questions on it. If you can't explain why the wrong options are wrong, you haven't learned it yet.

3. Read every explanation — including for questions you got right

Lucky guesses feel like knowledge. Reading the explanation for each answer catches them.

4. Do it timed

Cloud exams are long, and scenario questions take time to read. Practising untimed hides a real weakness. Give yourself a fixed time per question and stick to it.

5. Build one small thing

Reading about VPCs and IAM is not the same as wiring them up. Even a tiny project helps a lot:

• AWS: a static site on S3 + CloudFront, then a small app behind a load balancer.
• Azure: a VM in a VNet with an NSG, plus a storage account with role-based access.
• Google Cloud: a GKE or Cloud Run deployment with IAM set up properly.

Use free tiers and budget alerts so you don't get a surprise bill.

6. Decide you're ready with evidence

Book the exam when your practice scores are consistently comfortable across all domains — not just your average. One weak domain can sink a pass.

A simple 4–6 week plan (adjust to your hours)

• Week 1: Diagnostic quiz, read the official exam guide, list your weak domains.
• Weeks 2–4: One or two domains per week: learn, build, quiz, review explanations.
• Week 5: Full timed practice sets, revisit anything still weak.
• Week 6 (optional buffer): Final review, exam-day logistics (ID, room setup for online proctoring, system check).

People with existing experience often need less; career switchers often need more. That's fine — consistency beats intensity.

Free tools to try

Everything below is free and needs no account:

• Free practice quizzes — 10-question quizzes with explanations for CLF-C02, SAA-C03, DVA-C02, AZ-900, AZ-104, AI-900, Cloud Digital Leader, Associate Cloud Engineer, CKA, Terraform and more.
• Study plan generator — a week-by-week plan from your exam date and weekly hours.
• Exam readiness calculator — enter practice scores and study hours for a transparent estimate.
• Exam day checklist — for online proctored and test-centre exams.

If you want daily practice, the free ExamPro plan includes 50 practice questions a day, 30 flashcards a day and 3 free lessons per course: create a free account.

TL;DR

1. Pick the cloud you'll actually use.
2. Fundamentals if you're new or non-technical; associate if you've built things.
3. Match the associate cert to the role you want.
4. Quiz first, study weak domains, read explanations, practise timed, build something small.

Which cert did you start with, and would you choose the same one again? Let me know in the comments.