Responsive web design is an approach to web design aimed at allowing desktop webpages to be viewed in response to the size of the screen or web browser one is viewing with. In addition, it is important to understand that responsive web design tasks include offering the same support to a variety of devices for a single website. Recent work also considers the viewer proximity as part of the viewing context as an extension for responsive web design. Content, design and performance are necessary across all devices to ensure usability and satisfaction.

Custom programming is software that is specially developed for some specific organization or other user. Since custom programming is developed for a single customer it can accommodate that customer's particular preferences and expectations. It may also be developed in an iterative processes, allowing all nuances and possible hidden risks to be taken into account, including issues which were not mentioned in the original requirement specifications.