---
title: "Getting Started"
description: "Learn the core concepts of Corridor and build your first model or policy."
---

New here? This section gives you the mental model for how Corridor works: what the platform is, how objects connect, and what you can do with a model, a policy, or a simulation once it's registered.

For step-by-step instructions on building each object, see the [How-Tos](/user-guide/how-tos/).

Work through the pages in order, or jump to whichever topic matches what you're trying to understand.

<ul class="nav-cards">
  <li>
    <a class="nav-card" href="platform-overview/">
      <span class="nav-card__title">Platform Overview</span>
      <span class="nav-card__body">A high-level tour of Corridor and how its modules fit together.</span>
    </a>
  </li>
  <li>
    <a class="nav-card" href="analytical-lifecycle/">
      <span class="nav-card__title">Understand the Analytical Lifecycle</span>
      <span class="nav-card__body">The four stages every Corridor object moves through and how they depend on each other.</span>
    </a>
  </li>
  <li>
    <a class="nav-card" href="start-with-model/">
      <span class="nav-card__title">Start with a Model</span>
      <span class="nav-card__body">What a registered model looks like in Corridor and what you can do with it: simulate, explain, approve, monitor.</span>
    </a>
  </li>
  <li>
    <a class="nav-card" href="start-with-policy/">
      <span class="nav-card__title">Start with a Policy</span>
      <span class="nav-card__body">What a registered policy looks like in Corridor and what you can do with it: simulate, compare, approve, monitor.</span>
    </a>
  </li>
</ul>