MB-820 · Microsoft Dynamics 365 Business Central Developer
Each publication has a different job. Start with the guide that matches what you need now, or use them in sequence for the most complete JITA learning experience.
Build working judgment for Dynamics 365 Business Central development.
This Field Guide develops a working mental model of Dynamics 365 Business Central development. You will connect build and extend AL tables, pages, enums, codeunits, reports, queries, and application objects, design extension-safe events, interfaces, permissions, and application behavior, create APIs, OData actions, web services, and external integration paths, and apply testing, source control, packaging, deployment, upgrade, and lifecycle practices. You are not just memorizing feature names; you are learning what owns the requirement, what can fail, and how to verify the outcome.
- table/page extension vs standalone custom object
- API/OData integration vs internal AL processing
- functional extension issue vs performance/telemetry or deployment issue
Prove your MB-820 judgment across Dynamics 365 Business Central development under exam-style conditions.
This Exam Preparation Guide tests whether your understanding of Dynamics 365 Business Central development survives realistic decision pressure. You will practice separating table/page extension vs standalone custom object, API/OData integration vs internal AL processing, and functional extension issue vs performance/telemetry or deployment issue. Each scenario is designed to make you identify the governing fact, reject the nearest plausible alternative, and explain the evidence that keeps the correct answer correct.
- table/page extension vs standalone custom object
- API/OData integration vs internal AL processing
- functional extension issue vs performance/telemetry or deployment issue
Understand it first. Then prove you can apply it.
The Field Guide builds the understanding. Use it when you need the architecture, mechanics, dependencies, tradeoffs, failure paths, and verification logic behind the certification.
The Exam Preparation Guide tests the judgment. Use it when you need to practice under exam-style conditions, distinguish close answers, and understand why the correct answer survives changed facts.
Recommended sequence: Field Guide → Exam Preparation Guide → return to the Field Guide for targeted remediation where needed.