yawave is a customer data and engagement platform from yawave AG in Lucerne, Switzerland. It combines a customer data platform (contact and customer data, subscriptions and permissions, behaviour tracking, scoring and segments, personalisation) with marketing automation, content publishing and engagement features such as loyalty, gamification and forms. It is aimed at customer-facing teams in sport, associations, tourism, media and other companies, and supplements existing systems through a REST API, inbound and outbound webhooks, an embeddable SDK and single sign-on. You use it as an online suite with its own login.
yawave AG is headquartered in Lucerne; the sources name no parent company. According to its privacy policy, the yawave databases are mainly managed in Switzerland. Which providers host them is not stated, so ask the vendor. Switzerland is not an EU member but an EFTA country with an EU adequacy decision for data protection. The vendor publishes a GDPR page and a data processing agreement, and its terms are governed by Swiss law. No self-hosted option is described.