Free AD0-E128 Exam Prep
Adobe Certified Professional - Adobe Experience Manager Sites Developer (Exam AD0-E128)
Prepare for the AD0-E128 exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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AD0-E128 Adobe Certifications License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
AEM Core Components & HTL TemplatingYou are here
Master HTL block statements, context-aware XSS escaping, client libraries, Core Component proxying, and editable templates under /conf.
Sling Models, Services & Workflow Integration
Implement Sling Models with injectors and exporters, build OSGi declarative services, and customize AEM workflow processes.
Dispatcher Farm & Multi-Site Configuration
Configure dispatcher filters, cache rules, statfileslevel, multi-site blueprints with Live Copies, and run-mode OSGi configs.
Maven Archetype & Cloud Manager CI/CD
Structure multi-module Maven packages for AEM as a Cloud Service, configure repoinit scripts, and pass Cloud Manager quality gates.
Repository Maintenance & Full-Stack Debugging
Troubleshoot replication queues, optimize custom Oak indexes, perform log analysis, and debug clientlibs and dispatcher caching.
Can You Take the AD0-E128 Exam?
Check if you meet the basic eligibility requirements
- •The exam is delivered online through Excelsoft easyProctor and requires a camera
- •Candidates should be comfortable with Java, Sling, JCR, HTL, OSGi, Maven, and the dispatcher
- •The credential is valid for two years before renewal/recertification is required
AD0-E128 Quick Facts
Time to Get Licensed
4-8 weeks for developers already working with AEM Sites
From start to license in hand
Retake Policy
After a first failed attempt, Adobe requires a 24-hour wait. After a second or later failed attempt, the wait is 15 calendar days. Each attempt requires a separate fee.
Total Cost Breakdown
Free AD0-E128 Prep Tools
Reported exam pass rate: Adobe does not publish a public pass-rate percentage for Exam AD0-E128.. These figures describe exam candidates, not OpenExamPrep user outcomes. Check the exam sponsor’s website for published statistics.
125 Practice Questions
Mapped across all five AD0-E128 domains: AEM development, debugging, build and deployment, configurations, and maintenance.
Scenario-Based Explanations
Teaches HTL contexts, Sling Models, OSGi configs, dispatcher caching, and Cloud Manager instead of rote memorization.
Built for 2026
Review the current AD0-E128 blueprint and AEM as a Cloud Service development practices.
Completely Free
Practice the full bank free before sitting Adobe's $125 AD0-E128 exam.
What You'll Study
8 chapters covering the exam topics in this guide
Chapter 1: Dispatcher Farm & Multi-Site Configuration
3 sections
Chapter 2: Oak Indexing & Custom Logging
2 sections
Chapter 3: Component Architecture, HTL & Client Libraries
3 sections
Chapter 4: Sling Models & OSGi Declarative Services
2 sections
Chapter 5: Templates, Fragments & Business Workflows
3 sections
Chapter 6: Build, Packaging & Cloud Manager CI/CD
4 sections
Chapter 7: Environment Maintenance & Content Distribution
4 sections
Chapter 8: Analyzing, Debugging & Diagnostic Tools
4 sections
AD0-E128 Exam Details
Adobe Certified Professional - Adobe Experience Manager Sites Developer (Exam AD0-E128)
Administered by Adobe
Exam Content Breakdown
Based on the official Adobe content outline
Build components and templates with HTL (Sightly), Sling Models, and OSGi services; use editable templates, content policies, client libraries, Core Components, and Sling/JCR APIs to render and structure AEM Sites content.
Diagnose rendering, resolution, and performance issues using the Sling servlet resolver, error.log and request.log, the Web Console and Developer Console, dispatcher cache headers, and Sling Models adaptation diagnostics.
Use the AEM Maven archetype project structure (core, ui.apps, ui.config, ui.content, all, dispatcher), FileVault content packages, and Cloud Manager CI/CD pipelines with quality gates to deploy code and content to AEM as a Cloud Service.
Configure OSGi services with run-mode-specific .cfg.json files, dispatcher farms (filters, cache, virtualhosts, statfileslevel), replication and flush agents, Sling mappings, and security hardening such as the Referrer Filter.
Maintain AEM environments through revision cleanup, workflow and version purge, Oak index management, health checks via the Operations Dashboard, overlay/upgrade-safe practices, and AEM as a Cloud Service managed maintenance.
What's Included
8 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the AD0-E128?
After passing the AD0-E128, you can pursue these career paths
Adobe Certified Expert - AEM Sites Developer (AD0-E134)
Lead complex enterprise Sites architectures, custom Sling Model Exporters, advanced Oak Lucene indexing, and headless GraphQL delivery.
Adobe Certified Professional - AEM Sites Business Practitioner
Govern multi-site management live copy rollout configurations, editable template policies, and authoring workflows for content teams.
Adobe Certified Expert - AEM Assets Developer
Implement custom asset processing workflows, metadata schemas, Smart Content Service integration, and dynamic media delivery.
AD0-E128 Exam FAQ
Official Adobe Resources
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Ready to Start Your Free AD0-E128 Prep?
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