Bitbucket is a Git code hosting service from Atlassian. It provides repositories, pull requests and CI/CD pipelines, and integrates with Jira and Confluence. Atlassian offers it as a cloud service for teams of all sizes, and Bitbucket Data Center can be installed on an organisation's own infrastructure behind its firewall. Bitbucket Cloud states that it complies with SOC 2, ISO standards and the GDPR, and that code is encrypted in transit and at rest.
The operator is Atlassian Corporation, a Delaware company whose principal executive office is in San Francisco, so US legal process such as the CLOUD Act can reach data it holds. Atlassian's privacy policy says information may be transferred, processed and stored outside the user's country. Its data residency options for Jira and Confluence include EU regions in Frankfurt and Dublin, but the residency page does not say whether Bitbucket is covered. European organisations should confirm the storage location and processing terms, or consider self-hosting Data Center.