How can a brand effectively measure the success and ROI of their customer loyalty program, and what key metrics should they be tracking to ensure its ongoing impact and relevance in the market?

A brand can effectively measure the success and ROI of their customer loyalty program by tracking key metrics such as customer retention rate, repeat purchase rate, average order value, customer lifetime value, and Net Promoter Score. These metrics provide insights into the program's impact on customer behavior, satisfaction, and overall profitability. By regularly analyzing these metrics and comparing them against set KPIs, brands can assess the effectiveness of their loyalty program and make data-driven decisions to ensure its ongoing relevance and success in the market.