# Pillar8 Docs

> Real-time payment decision intelligence layer for checkout optimization.

## Docs

- [Architecture](https://docs.pillar8.com/architecture.md)
- [Checkout Optimize](https://docs.pillar8.com/checkout-optimize.md)
- [Constraints](https://docs.pillar8.com/constraints.md)
- [How It Works](https://docs.pillar8.com/how-it-works.md)
- [Overview](https://docs.pillar8.com/overview.md)
- [Quickstart](https://docs.pillar8.com/quickstart.md)
- [Shopify](https://docs.pillar8.com/shopify.md)
- [Webhooks](https://docs.pillar8.com/webhooks.md)