Retail digital marketing spend in the US will grow to $21.3 billion by 2023. Retailers will shift their ad budgets to connect efficiently with specific audiences. Traditional retailers will compete with DTC brands by acting on their brand promises. Innovation matters in an ecosystem where competitors share the same level of digital savviness. CMOs should read this report to see how retailers will distribute their growing budgets to compete with Amazon and direct-to-consumer (DTC) brands.