Customers expect to have a seamless experience when browsing a company website. Today, online tools can make your website as smooth as it should be. One of the best tools that companies use to aid in this task is called an API, or Application Programming Interface. This is a means of doing tasks through a set of functions on a computer. Essentially, this is a way that online programs connect and communicate with each other. Without these interfaces, interacting with websites would be nearly impossible.