---
title: "Relay"
description: "A service for filtering, rate-limiting, and processing vast amounts of Sentry events."
url: https://develop.sentry.dev/ingestion/relay/
---

# Relay

Ingestion is done by [Sentry Relay](https://github.com/getsentry/relay), a service for event filtering, rate-limiting, and processing.

It can act as:

* the store endpoint for your Sentry installation. See [Relay developer documentation](https://getsentry.github.io/relay/relay/).
* an additional middle layer between your application and Sentry. See [Relay product documentation](https://docs.sentry.io/product/relay/).

## Pages in this section

- [Relay Best Practices](https://develop.sentry.dev/ingestion/relay/relay-best-practices.md)
- [Naming and versioning patterns in project config](https://develop.sentry.dev/ingestion/relay/projectconfig-versioning.md)
- [Transaction and Span Rate Limiting](https://develop.sentry.dev/ingestion/relay/transaction-span-ratelimits.md)
- [Creating a new Data Category](https://develop.sentry.dev/ingestion/relay/creating-a-datacategory.md)