The first value in the Agile Manifesto is “Individuals and interactions over processes and tools,” and for many teams, being located in the same place facilitates these interactions. However, being part of an effective, collaborative team is less about location than it is about motivation and good practices.

The test pyramid is a valuable visual in agile. In particular, it argues that unit tests should make up the majority of tests, and while agile teams recite this principle, it is often not clear why it is so important. Here are five reasons unit tests should make up the majority of tests written for an application.

While a postmortem, or retrospective, is done after a project is completed, a premortem is done before the project starts as a way to imagine that the project failed and to explore what went wrong. You list every possible thing that can go wrong, then devise solutions to the most probable risks—before you need them.