Loyalty program management is the design and operation of customer reward systems that incentivize repeat purchases and brand advocacy. Programs typically have mechanics: earn points/rewards per purchase, reach tiers, redeem for discounts/perks. Well-designed programs increase repeat purchase rate (customers come back 30-50% more often), customer lifetime value (LTV 20-40% increase), and Net Promoter Score (customers advocate). Program design includes: mechanics, incentive structure, communication, redemption options, and measurement. Customer acquisition is expensive. Retaining existing customers is 5-25x cheaper. Loyalty programs are the tool. A $1 investment in a good loyalty program returns $5-10 in LTV increase. For e-commerce, the difference between a 1% repeat purchase rate and 3% is massive (multiples more revenue). Learning to design loyalty programs that actually work (most fail) positions you as a growth driver. Companies without loyalty programs are leaving revenue on the table.