---
title: CORS
slug: cors
docTags: 
createdAt: 2020-12-19T13:44:48.000Z
---

With security purposes, we have some limiting rules, regarding the origin of the request to your servers. Please pay attention, when you enter your domain on the tracker initialization step.

## What is CORS?

Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTP headers to tell browsers to give a web application running at one origin, access to selected resources from a different origin. A web application executes a cross-origin HTTP request when it requests a resource that has a different origin (domain, protocol, or port) from its own.