Uber, for example, quickly grew from a small startup to a global company by integrating partner capabilities via APIs. It uses the Google Maps API to locate customers and track drivers, Google’s Cloud Messaging API for instant messaging, and PayPal’s Braintree API for payment. In addition to using third-party APIs, Uber also has developed its own API and provided it to other companies to extend the reach of its services. For instance, OpenTable, the online reservation network, incorporates Uber’s API in its app to allow customers to arrange travel to and from restaurants when they make a reservation. Companies such as Amazon, eBay, Facebook, Salesforce, and Twitter also have successfully used APIs to bolster their capabilities and build their businesses.