A pitch is set of questions about a project's process and deliverable, answered using short, written responses.
Pitches can be created from templates, or from created from scratch. Alternatively, a Challenge can be created with no particular defined, leaving the option open to the person submitting the Project.
Pitch responses provide extra context and details about project submissions, beyond the actual deliverables. Depending on how a given Challenge is set up, a pitch may or may not be required to submit a project.