The Heartland Payment Systems API allows to integrate payments and billing functionalities into web services. Tokens and keys available to authenticate. Also accessible examples in C#, PHP, Java, Ruby, Python, and Node.js. Industries that can benefit from integration include restaurants, education K-12, retail, campus, grocery, parking, laundry, and petroleum. Heartland provides payroll, gift cards, point of sale, mobile payments, school solutions, school nutrition, and mobile ordering services.