> For the complete documentation index, see [llms.txt](https://docs.sorry-cypress.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sorry-cypress.dev/concepts/parallelization-guide.md).

# Parallelization Explained

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EDIT: Check out the new parallelization guide available at <https://currents.dev/readme/guides/parallelization>
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Parallelizing cypress tests means running different tests with multiple cypress agents at the same time. The [official Cypress documentation](https://docs.cypress.io/guides/guides/parallelization.html) greatly explains why is it good. In short, it allows to greatly reduce the overall time of running your tests.

![Parallelization diagram](/files/-MVeLqahRla6eLMREFLr)

When an agent is configured to run tests in parallel, it tries to connect to a remote service to coordinate the tests running order. Sorry-cypress is such a service.

It coordinates requests from cypress agents, providing each agent with different tests to run. It also collects test results for browsing.

You will still need to set up (and pay for) a CI environment that runs cypress agents.

When using sorry-cypress you'll need to [override the default configuration](/integrating-cypress/configuring-cypress-agent.md) to set an alternative URL for contacting the remote dashboard.