A certified Six Sigma expert focuses on how to plan and execute a project, whereas a PMP certified professional focuses on how to decrease wasted time, effort, and money on a specific process. Project management focuses on finishing a project by a specified deadline, whereas Six Sigma projects include a continuous control phase. A Six Sigma expert uses data-driven methodologies and statistics to identify and address a problem, whereas a PMP certified project manager employs established procedures to execute a project on time and on budget.