Unzer is a payment service provider that offers a comprehensive ecosystem of integrated payment and software solutions. They cater to merchants across Europe, supporting over 85,000 businesses with services ranging from online purchases to in-store mobile POS systems and final settlement processes[1][3]. Their target audience includes small to large retailers seeking seamless payment experiences. Unzer's unique selling proposition is its all-in-one approach, simplifying retail operations by integrating online and offline payment systems into a single backend, enhancing customer experience and business efficiency[1][3].