What is a Sprint? | Scrum.org
Sprints are fixed length periods of work that last one month or less to create consistency and ensure short iterations for feedback in order to inspect and adapt both how work is done and what is being worked on. If cycles are longer, then the spirit of frequent feedback cycles can be lost. Longer Sprint may also get too complex and may increase risk. A new Sprint starts immediately after the conclusion of the previous Sprint.| Scrum.org
