Bloomreach is a commerce experience platform for retailers and brands. It combines marketing automation (Engagement) for email, SMS, WhatsApp, mobile apps and web personalisation with search and product recommendations for online shops (Discovery) and a content management system. The platform also includes AI agents for marketing and shopping. Bloomreach is delivered as a cloud service; its technical documentation describes Engagement as a SaaS solution hosted on Google Cloud Platform.
According to Wikipedia, Bloomreach, Inc. is headquartered in Mountain View, California, and is therefore subject to US law. Its login page offers separate regional environments for the EU, US, UK, Canada and Asia-Pacific, so a European environment can be chosen; the pages consulted do not name exact hosting locations. The software is not open source. For a European organisation, this means customer data, even in an EU environment, is processed by a US vendor on a US cloud provider. It is therefore worth requesting the current sub-processor list and the hosting location of your environment.