---
title: "Systems and decision trees"
description: "Chain SOPs, approvals, tasks and decision trees into systems that OKiDO runs step by step, and turn recurring decisions into decision trees."
url: "https://okido.io/en/docs/systems-decision-trees"
docs: "https://okido.io/en/docs.md"
video: "https://assets.okido.io/docs/12%20Systems%20and%20decision%20trees.mp4"
language: "en"
edition: "2026-10-23"
---

# Systems and decision trees

Chain SOPs, approvals, tasks and decision trees into systems that OKiDO runs step by step, and turn recurring decisions into decision trees.

- [Build a system](https://okido.io/en/docs/systems-decision-trees/build-a-system.md): Chain SOP checklists, approvals, tasks and decision trees into one flow that OKiDO runs step by step.
- [Run a system](https://okido.io/en/docs/systems-decision-trees/run-a-system.md): Start a run of a published system, follow it node by node, approve its sign-offs and cancel it when it is no longer needed.
- [Build a decision tree](https://okido.io/en/docs/systems-decision-trees/build-a-decision-tree.md): Turn a decision your team makes again and again into a guided flow of questions, branches and outcomes.
- [Run a decision tree](https://okido.io/en/docs/systems-decision-trees/run-a-decision-tree.md): Answer a decision tree's questions to reach a decision, and keep the decision log as a PDF.
- [Answer a decision tree for a running system](https://okido.io/en/docs/systems-decision-trees/answer-a-system-request.md): When a running system needs your decision, find the request in your inbox and answer the decision tree so the system can go on.