The distinction between the front-end and back-end and the various tasks performed by developers who operate on both ends of the systems should be more transparent. The back-end consists of the host or, more recently, the storage, whereas the front-end is the browser.
Front-end development is necessary if you wish to create user interfaces and other visually appealing components of programs. Back-end development is essential if you need to build services and APIs, use the cloud, or require algorithms.