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After months of hands-on experience and structured study, I'm proud to announce that I am now officially an Adobe Certified Professional - Adobe Experience Manager Developer.

Link: https://certification.adobe.com/credential/verify/64fc82a4-223e-11f0-9883-42010a40002a


🎯 What Helped Me Pass - Highly Recommended

If you're preparing for this certification or considering it in 2025, I want to share what helped me succeed - and what didn't.

1. AEM Sites Developer Professional (AD0-E128)–2025 PREP TESTS on Udemy

Let me be blunt: this course was gold.

It's not just a practice quiz. Some of the exact same questions from the official exam were in this course. That's rare, and it made a huge difference. The instructor clearly knows the certification inside out.

If you're serious about passing - don't think twice. This is the one resource I would recommend above all.

🔗 Link: https://www.udemy.com/course/aem-sites-developer-professional-ado-e128/?couponCode=ST6MT60525G1


2. The Official AEM Documentation

🔗 Link: https://experienceleague.adobe.com/docs/experience-manager.html

AEM's documentation is dense - but don't skip it. The exam expects real-world understanding, and the docs are the best way to fill in knowledge gaps. I recommend studying everything in the documentation for AEM, especially this topics:

  • Sling Models & HTL integration
  • Core components and their extension
  • OSGi configurations and annotations
  • Dispatcher configuration best practices
  • Experience and Content Fragments
  • Authentication setups (IMS vs SAML)

What Didn't Help Me Much ?

Adobe offers official training and practice tests - but let me be honest: not a single question from those appeared on my actual exam.
They're useful to understand general concepts and structure. But if you rely solely on that, you'll be underprepared.


My Strategy

  1. Took the Udemy tests - several times.
  2. Reviewed answers I got wrong. Learned why.
  3. Went deep into the Adobe docs to fill gaps.
  4. Took the exam - and passed with confidence.

Final Thoughts

If you're aiming for the AD0-E128 certification, know this: it's not about memorizing - it's about understanding how AEM works under the hood. Real-life experience helps, but the right resources make all the difference.


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© 2025 Kristiyan Velkov. All rights reserved.