OECM will provide suppliers a survey link to be shared with customers at least once a year on active customers (with spend). OECM suggests sending the survey to customers every quarter or upon completion of a project. These results will be used to calculate the Net Promotor Score (NPS) used for the customer feedback evaluation criterion. OECM will also work closely with customers and suppliers to obtain customer feedback through feedback mechanisms such as business review meetings, workshops, a community of practice (as applicable), surveys, and other communication avenues. After each customer engagement, OECM will request a Net Promoter Score. Customers are also encouraged to reach out to OECM directly to share data and information on supplier performance.