[Monolithic application](https://en.wikipedia.org/wiki/Monolithic_application) > In [software engineering](https://en.wikipedia.org/wiki/Software_engineering) > "Software engineering", a **monolithic application** describes a > single-tiered [software application](https://en.wikipedia.org/wiki/Application_software)"Application > software" in which > the [user interface](https://en.wikipedia.org/wiki/User_interface) and data > access code are combined into a single program from a > single [platform](<https://en.wikipedia.org/wiki/Platform_(computing)>)"Platform > (computing)".