The core activity of Mountain Top Digital AG encompasses the following areas: * Web design: Development of responsive, clean and individual websites, including corporate web design and content management systems (CMS) such as Drupal, Joomla and Wordpress. * Mobile app development: Development of mobile applications for various platforms, including native iOS development, Android development, Windows Phone development, BlackBerry development and hybrid development. * Online marketing: Services in the field of online marketing, including social media profiling, content marketing, social media marketing, viral campaigns and search engine optimization (SEO).