Application Programming Interface (API) provide channels for software components to talk to one another, exchange information and trigger actions. In simpler terms, APIs are functions/methods which help implement, develop and build upon while utilizing an existing generic framework. Talking in reference to PayPal, web urls which can be accessed along with identifiers and certain other parameters to make a payment, to get transaction details or to build a custom shopping cart would be called APIs. Identifiers are required to ensure authorized access to data and they are composed of a PayPal API username, password and signature. Let’s see how you can get your hands on this information for your PayPal merchant account. Read more →