Rezdy is online booking software designed for tour operators, activity providers and resellers. Its homepage presents it as a commercial hosted service, and says that customers keep ownership of their data, branding, website and customer relationships. No self-hosted or open-source version is mentioned.
Rezdy Pty Limited is an Australian company with its contact address in Sydney, outside the EU and EEA. Its privacy policy names the company as controller, describes data centres "in CA and the EU" without explaining the abbreviation CA, and lists related recipients in Canada, Germany, Romania and the United States, among them Rezdy LLC and RC Topco, Inc. Transfers are said to rely on European Commission standard contractual clauses, and the GDPR applies to EU residents, but the policy gives no complete list of sub-processors and names no EU representative. For a European organisation, the key questions are how much data is hosted in the EU and what role the US group entities play in processing.