> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lexq.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Introduction
> LexQ is the Decision Operations Platform for engineering teams. Test rule changes on real production traffic with Impact Simulation, understand every decision with full trace, and deploy with confidence — no more blind changes to business logic.
## What is LexQ?
LexQ is the **Decision Operations Platform for engineering teams**. Instead of shipping application code every time a business rule changes, you define decisions in a visual console, prove every change with Impact Simulation before production, and deploy without touching application code.
Create conditions and actions through an intuitive UI. Fully visual, fully traceable.
Draft, publish, and deploy rule versions with full audit history.
Test rule changes against real data before they touch production.
Re-run past decisions against a candidate version and diff the outcome.
Every decision sealed with its why, its inputs, and who shipped the rules.
Track every execution — what matched, what didn't, and why.
## See the Impact Before You Deploy
Run Impact Simulation against real execution data, compare rule versions side-by-side, and deploy only when you're confident in the outcome.
## Architecture Overview
LexQ consists of three main components:
| Component | Domain | Purpose |
| -------------- | ----------------- | --------------------------------- |
| **Console** | `console.lexq.io` | Web-based management interface |
| **Engine API** | `api.lexq.io` | Real-time rule execution endpoint |
| **Docs** | `docs.lexq.io` | Documentation and API reference |
## Who is LexQ for?
LexQ is built for **engineering teams** that own the business decisions in their systems. Product managers and operations teams work alongside them — defining rules, reviewing simulations, and approving deployments — but engineering owns the integration and operates the platform.
Teams use LexQ to:
* Update business rules without deploying application code
* Prove every change against real data before it touches production
* A/B test rule versions with production traffic
* Maintain a full audit trail of every change and execution
Common use cases include pricing rules, promotion logic, fee calculations, eligibility checks, risk scoring, and any business logic that changes frequently.
## Next Steps
Get your first rule running in under 5 minutes.
Learn the official LexQ terminology.
Integrate LexQ into your application.
Understand how policy groups, versions, and rules work together.