Wayfair generates revenue through a hybrid e-commerce model that combines drop-shipping with proprietary fulfillment, generating $11.9 billion in net revenue across six distinct brands in 2024. The core revenue stream is direct retail sales through Wayfair.com and its subsidiary sites—AllModern, Birch Lane, Joss & Main, Perigold, and Wayfair Professional—which collectively offer over 30 million products from more than 20,000 suppliers. In 2024, approximately 75% of merchandise was sourced from third-party suppliers using a drop-ship model where suppliers hold inventory and handle fulfillment, while Wayfair manages the storefront, customer service, and merchandising. The remaining 25% of revenue flows through CastleGate, Wayfair's proprietary logistics network, where products are forward-positioned in 20+ million square feet of warehouse space across 60+ buildings globally, enabling faster delivery and higher conversion rates. This hybrid model allows Wayfair to offer massive selection without carrying full inventory risk, while CastleGate provides a competitive moat through improved delivery speed and reduced damage rates on bulky home goods. Revenue is geographically concentrated: the U.S. segment contributed $10.4 billion (87.5% of total) in 2024, while international markets (Canada, UK, Ireland, and formerly Germany) contributed $1.5 billion. The company monetizes through product markups on third-party sales, direct inventory sales through CastleGate, and increasingly through logistics services via CastleGate Forwarding and Multichannel, which allows suppliers to use Wayfair's infrastructure for non-Wayfair orders. Wayfair Professional serves B2B customers including contractors, interior designers, and property managers, contributing a growing but undisclosed portion of revenue. Gross profit in 2024 was $3.6 billion at a 30.2% gross margin, down from $3.7 billion in 2023 due to lower order volume and macroeconomic pressures. Operating expenses consumed $4.0 billion in 2024, including $1.47 billion in advertising (12.4% of revenue), $470 million in customer service and merchant fees, and $1.98 billion in selling, operations, technology, and administrative costs. The company has been restructuring since 2022, reducing headcount from 16,681 in 2021 to approximately 12,800 in 2024, cutting $50 million in quarterly SG&A costs year-over-year by Q1 2025. Wayfair's business model depends on high customer lifetime value: repeat customers placed 80.1% of orders in 2024, with LTM net revenue per active customer reaching $555, up 3.4% year-over-year. The average order value of $300 in 2024 reflects the company's focus on higher-consideration purchases. Mobile commerce is critical, with 64.5% of Q4 2024 orders placed via mobile device. The company manages advertising spend on a return-on-investment basis, tracking customer acquisition cost against lifetime value, though specific CAC figures are not disclosed. CastleGate penetration increased 400 basis points year-over-year in 2024, with Shah noting that forward-positioned inventory drives higher conversion, lower return rates, and reduced shipping costs. The physical retail expansion, beginning with a 150,000-square-foot store in Wilmette, Illinois in April 2024, represents a new revenue channel with minimal inventory risk since in-store products are largely supplier-owned.