India's #1 D365 F&O Developer Platform NEW: AI Lab

Master D365 F&O Development

From X++ basics to Agentic AI. The only platform with a live code simulator, AI mentor, mock exams, and daily AI-generated content — built by a 15-year D365 veteran.

24
Deep Lessons
10
Lab Exercises
60+
Mock Questions
Live
AI Updates Daily
SalesLine_Extension.xpp
X++
1// Chain of Command — no overlayering needed
2[ExtensionOf(tableStr(SalesLine))]
3final class SalesLine_MyExt
4{
5  public boolean validateWrite()
6  {
7    boolean ret = next validateWrite();
8    if (ret && this.QtyOrdered > 1000)
9      ret = checkFailed("Max qty exceeded");
10    return ret;
11  }
12}
✅ Extension model
⚡ No overlayering
🔗 CoC pattern
Scroll to explore
⚗️
Live X++ Lab
Write & run code in browser
🤖
AI Code Review
Claude-powered feedback
📝
MB-500 Mock Exams
60+ exam-style questions
📚
Daily AI Lessons
New content every morning
🔄
Dual Write Mastery
5-tab deep dive
// Why D365 Dev Hub
Not just another blog

Other sites give you articles. We give you a platform — interactive, AI-powered, and updated daily.

📰 Typical D365 Blog
Static articles only
No practice environment
No AI features
No mock exams
Updated manually (rarely)
No career guidance
VS
⚡ D365 Dev Hub
24 interactive deep-dive lessons
Live X++ simulator + AI review
Claude AI mentor, reviewer, advisor
MB-500, MB-700 full mock exams
New lesson + quiz every morning
Developer → Architect roadmap
// Learning Paths
Choose your track
01
Beginner
🌱
X++ Foundations
Variables, EDTs, Enums, select, CRUD, transactions
Base TypesEDTsCRUD
→
02
Intermediate
⚡
Extensions & CoC
Extension model, Chain of Command, Event Handlers
CoCEventsForms
→
03
Expert
🔗
Integrations & APIs
OData, Service Bus, Logic Apps, Azure Functions
ODataDIXFAzure
→
04
Expert
🔄
Dual Write Mastery
Table maps, sync, conflicts, custom maps
Table MapsDataverse
→
05
Cutting Edge
🤖
Agentic AI for D365
LangGraph, Azure OpenAI, MCP Protocol, AI Agents
LangGraphMCPOpenAI
→
06
Practice
⚗️
X++ Practice Lab
10 graded exercises with AI feedback and simulator
ExercisesAI Review
→
// Claude AI updates this daily
Fresh today
Loading latest updates...
// Quick Access
Jump straight in
📝
Mock Tests
MB-500 · MB-700 · X++ Quiz · Daily AI Quiz
→
🤖
AI Mentor
Code review · Architecture · Pattern Advisor
→
⚗️
Practice Lab
10 exercises · X++ Simulator · AI Review
→
🗺️
Career Roadmap
Developer → Architect progression map
→
Ready to level up your D365 career?
Join thousands of developers mastering D365 F&O — completely free.
// Integration Patterns
D365 F&O Integrations
Click any integration pattern for architecture diagrams, code examples, and best practices.
🔌
OData v4 Services
REST-based read/write via D365 data entities. External apps, Power BI, mobile.
GET /data/SalesOrderHeaders
📨
Azure Service Bus
Async decoupled messaging for high-volume, reliable event-driven integration.
Business Events → Queue/Topic
⚡
Azure Logic Apps
Low-code workflow automation connecting D365 with 400+ connectors.
Event-triggered workflows
📦
DIXF / DMF
Data Import/Export Framework for bulk migration and recurring integrations.
Bulk data import/export
🛠️
Custom Services
SOAP/JSON services in X++ for tight integration with legacy or proprietary systems.
SysEntryPointAttribute
λ
Azure Functions
Serverless middleware for transformation, orchestration, and protocol translation.
Serverless middleware
// Dual Write
Dual Write Mastery
Real-time bidirectional sync between D365 F&O and Dataverse
Architecture
Table Maps
Setup
Error Handling
Custom Maps
// Certification Practice
Mock Tests
Simulated Microsoft certification exams with instant AI-powered explanations.
🤖 AI Tools
💬
D365 Mentor
Ask anything about D365
🔍
X++ Reviewer
Paste code for analysis
🧩
Pattern Advisor
Integration patterns
🏗️
Arch Copilot
Solution design help
Powered by
Azure OpenAI GPT-4o
D365 AI MentorOnline · GPT-4o
// Career Roadmap
D365 F&O Career Path
Click any stage node or topic to jump to that lesson.
// PRACTICE LAB
Exercises Task Hints
// X++ EDITOR 10 OOB Tables
🤖 AI CODE REVIEW
📋 Contoso (USMF) — Full Table Reference
36 OOB tables with real Contoso demo data. Use in your X++ code with select statements.
💡 Usage examples:

CustTable custTable;
select firstonly custTable where custTable.AccountNum == "US-001";
info(custTable.Name);

SalesTable salesTable;
while select salesTable where salesTable.CustAccount == "US-001" { info(salesTable.SalesId); }