---
title: "Overview"
description: "Using ComfyUI as a Developer"
---

ComfyUI is a powerful GenAI inference engine that can be used to run AI models locally, create workflows, develop custom nodes, and be deployed as a server.

ComfyUI's key capabilities are:

- **[Creating Workflows](/development/core-concepts/workflow)**: Workflows are a way to orchestrate AI models and automate tasks. They are a series of nodes that are connected together to form a pipeline.
- **[Custom Nodes](/custom-nodes/overview)**: Custom nodes can be written by anyone to extend the capabilities of ComfyUI for your own use. Nodes are written in Python and are published by the community.
- **Extensions**: Extensions are 3rd party applications that improve the UI of ComfyUI.
- **[Local Server API](/development/comfyui-server/comms_overview)**: ComfyUI can be deployed in your own environment as an API endpoint.
- **[Cloud API](/development/cloud/overview)**: Run workflows programmatically on ComfyUI Cloud infrastructure without managing your own hardware.