A Harvard Business Review study shows 77% of executives call loyalty a top strategic priority, yet only 49% say their programs are actually working. The problem is simple: most loyalty programs launch, then get stuck. Winning loyalty programs are constantly evolving. In our 2026 loyalty playbook, we break down exactly how the best strategies work, with real-world examples from Burger King, Starbucks, H&M, and other leading brands. If you're serious about loyalty, this is where to start.