The idea of segmentation In OS is similar in function to paging, which is used to manage memory. Segmentation is a way to divide the user program and data into segments. Segmentation and paging are two different things. Each page in paging has a fixed size, while segments have a variable size.
Segmentation maps the user's view onto actual physical memory. We will briefly discuss segmentation and its workflow in the next section. We will also discuss segmentation using an example and conclude the discussion with some advantages and disadvantages.