Why SkillStack exists
I'm a tech worker who's spent years on the other side of hiring and upskilling: picking which certifications were worth the study hours, watching colleagues spend months on badges nobody asked for, and learning — usually the slow way — which credentials actually move a resume. Along the way I built a habit of comparing them properly: exam cost, prep time, validity period, and what job postings actually ask for.
SkillStack is those comparisons, written down. I write in the first person because these are judgments I've actually made, not things I read about. I stay anonymous because this site is about the credentials, not about me — and because my employer doesn't need to be part of this story.
What you'll find here
- Mechanics, not motivation. No "10 habits of successful learners." Just what an exam costs, how long it takes to prepare, how long the credential stays valid, and what employers ask for — the operational details.
- Examples labeled as examples. When I show numbers, I'll tell you whether they're real figures (like exam fees from the vendor) or simplified illustrations. Content that blurs that line isn't trustworthy.
- Retirement dates, not just launch dates. Vendors retire exams constantly — Microsoft retired four Azure exams in 2026 alone. Every guide carries a "last verified" date, and retired exams get updated or pulled.
What you won't find here
- Personalized advice. I don't know your background, your employer, or your goals. Nothing here is a recommendation for you specifically — it's a starting point for your own research.
- Guaranteed outcomes. No certification guarantees a job, a promotion, or a raise. Any site that promises one is selling you something.
- Sponsored opinions. Some links on this site are affiliate links, which means I may earn a commission if you sign up — at no extra cost to you. Affiliate relationships never determine what I write or recommend. Full details on the disclosure page.
How the site makes money
SkillStack is free to read and always will be. It earns money through affiliate partnerships: if you click a link and enroll in a course or certification program, the company may pay this site a commission. That revenue is what funds new guides. It doesn't change what the course costs you, and it doesn't buy a favorable review. If I wouldn't recommend it without a link, it doesn't get recommended with one.