JITA Learning · Microsoft · Field Guide
MB-500 · Microsoft Dynamics 365: Finance and Operations Apps Developer
Build working judgment for Dynamics 365 Finance and Operations development.
What you should expect
Build working judgment for Dynamics 365 Finance and Operations development.
This Field Guide develops a working mental model of Dynamics 365 Finance and Operations development. You will connect design X++ classes, extensions, events, tables, forms, and application behavior without breaking extensibility, choose set-based vs row-based operations and apply caching/concurrency practices, build data entities, integration patterns, REST/SOAP interactions, and external service connections, and use source control, branching, build, deployment, and lifecycle practices for F&O development. You are not just memorizing feature names; you are learning what owns the requirement, what can fail, and how to verify the outcome.
What you will learn
- design X++ classes, extensions, events, tables, forms, and application behavior without breaking extensibility
- choose set-based vs row-based operations and apply caching/concurrency practices
- build data entities, integration patterns, REST/SOAP interactions, and external service connections
- use source control, branching, build, deployment, and lifecycle practices for F&O development
- recognize why one technically plausible alternative loses under the stated requirement
- apply Changed Fact reasoning and verify the design or implementation through operational evidence
Decision skills you will practice
- identify the governing requirement
- compare the nearest plausible alternative
- apply Changed Fact reasoning
- trace prerequisites, dependencies, and failure paths
- verify configured state, effective state, runtime outcome, and negative-path evidence
Who this is for
developers extending Dynamics 365 Finance and Operations with X++, integrations, data entities, ALM, and performance-conscious customization
Use this when you need to learn the architecture, mechanics, dependencies, tradeoffs, failure paths, and verification logic behind the certification.
Decisions you will learn to distinguish
- extension vs overlayering or breaking customization
- set-based vs row-based processing
- application-code issue vs integration or platform-performance issue
Why JITA is different
Microsoft explains the platform. JITA teaches the decision.
Microsoft Learn explains the services, features, and documented behavior that support Dynamics 365 Finance and Operations development. JITA connects those capabilities into decisions: what owns the requirement, what the nearest alternative is, what changes when one fact changes, and what evidence proves the implementation worked.
How to choose:
Use the Field Guide to build understanding. Use the Exam Preparation Guide to test whether that understanding survives exam-style decisions.