---
title: Expert skills
description: >-
  Customize and extend Lightning for things like custom hardware or distributed
  strategies.
canonical: 'https://lightning.ai/docs/pytorch/stable/level-up/expert'
---
# Expert skills {#expert-skills}

Customize and extend Lightning for things like custom hardware or distributed strategies.

- [Level 21: Extend the Lightning CLI](/docs/pytorch/2.6.6/level-up/expert/expert_level_22.md) — Extend the functionality of the Lightning CLI.

- [Level 22: Integrate a custom cluster](/docs/pytorch/2.6.6/level-up/expert/expert_level_23.md) — Integrate a custom cluster into Lightning.

- [Level 23: Make your own profiler](/docs/pytorch/2.6.6/reference/tuning/profiler_expert.md) — Make your own profiler.

- [Level 24: Add a new accelerator or Strategy](/docs/pytorch/2.6.6/level-up/expert/expert_level_24.md) — Integrate a new accelerator or distributed strategy.

---

**Navigation**

- Parent: [Level Up](/docs/pytorch/2.6.6/level-up.md)
- Children:
  - [Level 21: Extend the Lightning CLI](/docs/pytorch/2.6.6/level-up/expert/expert_level_22.md)
  - [Level 22: Integrate a custom cluster](/docs/pytorch/2.6.6/level-up/expert/expert_level_23.md)
  - [Level 24: Add a new accelerator or Strategy](/docs/pytorch/2.6.6/level-up/expert/expert_level_24.md)