A variation of the Agile methodology, which supports a more collaborative approach to various user experience design methods.
Often associated with use in start-ups, this methodology is focused on the rapid evaluation of hypotheses (i.e. learning loops), while putting in the minimal amount of effort required to test these hypotheses.
Scenario-based Design (also known as Task-Centered Design)
Another form of user-centered design that relies on stories of user interaction as the source of guidance for design requirements.