This document discusses how contact centers can apply Lean Six Sigma methodologies to improve processes and customer satisfaction while reducing costs. It covers preparing a contact center for Lean Six Sigma, applying the techniques, challenges to avoid, and success factors. Case studies show how Lean Six Sigma helped reduce nuisance calls, streamline customer onboarding, and improve a new online payment feature launch. Training employees, executive support, and viewing the contact center holistically are emphasized as critical success factors.