SDK stands for software development kit, and refers to a collection of tools that can be used by app developers to add specific functionality to an app.
SDKs are important because they allow app developers to create complex, multifunctional apps that meet the needs and expectations of their audience without wasting time and effort developing aspects of the app’s function from scratch. For example, if an app would benefit from mapping capability, its creators may choose to utilize an SDK from a third party to enable mapping on their app so that their developers can focus on developing the features that provide the unique value of the app.
Think of SDK’s like the spice blends, prechopped vegetables, or sauces of the app creating kitchen; just as a cook can save time, money, and effort by utilizing ready-to-cook ingredients, app creators can increase the functionality and value of their app with ready-to-integrate SDKs.
It can be expensive and time consuming to develop every aspect of an app from scratch and especially when so many apps require existing functionalities, it makes good sense for developers to utilize SDKs when possible so that they can focus on what is unique and valuable about their app.
SDKs and APIs are both tools that make developers lives easier when creating new apps, however, they are mostly dissimilar products.
SDK stands for software development kit and refers to a collection of tools that can be used to enable functionality for an app.
API stands for application programming interface and is a tool that helps apps communicate with third-party data.
For example, if an app developer needs to include to include payments as a function within the app, they may utilize an SDK to enable the collection of credit card information. An API may also be employed to help the app communicate with third-party payment services such as PayPal, and is likely already included in the SDK. (An SDK may include an API but an API will never include an SDK.)