Cypress is a testing tool for developers building web applications. The Cypress App is installed locally and runs end-to-end tests that drive the application in a real browser, plus component tests for frameworks such as React, Angular, Vue and Svelte. Tests are written in JavaScript or TypeScript and can run in a CI pipeline. Cypress Cloud is a separate, paid, vendor-hosted service that records test runs and adds replay, analytics and orchestration.
Cypress lists a mailing address in Atlanta, Georgia, in the United States. According to its security page, all test content in Cypress Cloud is stored in the USA in multi-tenant environments, and the page mentions no EU hosting. The vendor states that it maintains a SOC 2 Type 2 report for Cypress Cloud. Because the Cypress App runs on your own machines, test execution can stay in-house; using Cypress Cloud means test artefacts are held by a US provider, which a European organisation should weigh against its data-transfer obligations.