Computer software development; Software design and development; Computer software design and development; Development of mobile payment software; Software development in the field of processing card and cash payments, online orders and marketing; Computer software development in the field of processing card and cash payments, online orders and marketing; Design and development of software and hardware for processing card and cash payments, online orders and marketing; Software development and product development in the field of processing card and cash payments, online orders and marketing; Design and development of computer software for the improvements of purchasing functions of business; Application service provider, namely, hosting, managing, developing, analyzing, and maintaining applications, software, and web sites, of others in the fields of advertising and marketing