Core Insights - Walmart has surpassed Amazon in same-day delivery, particularly in groceries, with 48% of grocery-only customers opting for same-day delivery compared to 36% for Amazon [1][5][4] - The competitive landscape is shifting, challenging the assumption that Amazon is always the fastest due to its logistics network [3][4] - Walmart's investments in local fulfillment centers and last-mile partnerships are yielding significant results in time-sensitive categories [8][10] Delivery Performance - Walmart leads in same-day delivery for grocery items, with 48% of its grocery customers choosing this option, while only 36% of Amazon's grocery customers do the same [5][4] - Among customers purchasing both grocery and non-grocery items, 41% preferred Walmart for same-day delivery, compared to 29% for Amazon [5] Consumer Behavior - A notable 21% of Walmart's grocery customers did not use delivery at all, contrasting sharply with Amazon, where less than 2% of grocery-only customers skipped delivery [9][10] - Many Walmart customers utilize curbside pickup or shop in-store, leveraging Walmart's strengths in physical retail, while Amazon's customer base is more reliant on delivery [10] Strategic Shifts - Walmart's success in same-day delivery represents a strategic evolution in its eCommerce operations, driven by significant investments in logistics and technology [8][11] - The competition between eCommerce and brick-and-mortar is intensifying, with the final mile becoming a critical battleground [10][11] Market Dynamics - The retail environment is being reshaped by various factors, including tariffs, inflation, and changing consumer behavior, which are influencing operational strategies across companies [11][12] - As companies like Amazon and Walmart recalibrate their strategies, the focus is on leveraging innovations to address operational challenges [13]