Waterfall Methodology
Waterfall methodology is a process that focuses on a forward movement of a project through defined stages, with a focus on completion of a phase before moving on to the next.
Where agile methodology dictates that your project will continuously iterate toward a minimum viable product, waterfall methodology focuses on completion and understanding of a phase.
Waterfall may often lead to added documentation and rigidity, but it also provides a clearer picture of the budget and better expectations of a finish date.