When does the Plan-Do-Check-Adjust cycle occur in scrum?

The Plan-Do-Check-Adjust (PDCA) cycle is a continuous and sequential process that occurs across all scrum events within the Agile Release Train (ART). Each iteration within the ART is essentially a PDCA cycle, where teams plan, do, check, and adjust their work1. This cycle begins with planning the goals for the iteration, delivering increments of the solution, reviewing and demonstrating the results, and finally, adjusting before starting a new cycle. The PDCA cycle is integral to the iterative and incremental approach of scrum, ensuring continuous improvement and alignment with the objectives of the ART1.