In which phase of PDCA does full implementation of the solution occur?

The full implementation of the solution occurs in the "Act" phase of the PDCA (Plan-Do-Check-Act) cycle. This phase is focused on consolidating the gains achieved from the implemented solutions and standardizing the process improvements. It involves putting the successful solutions into practice on a broader scale or across the entire organization.

During the "Act" phase, teams document the lessons learned and consider any adjustments necessary for the future. This phase often includes continual monitoring to ensure the changes lead to sustained improvements and to determine if further action is required. The effective implementation and institutionalization of changes occur here, ensuring that processes are standardized and that the organization continuously strives for improvement over time.