How do thousands of American businesses deliver their goods to millions of Asia-based customers in as fast as three days? They sell their goods through Coupang, a U.S. technology and global retail company that has invested billions of dollars in artificial intelligence, robotics, cloud computing, automation, infrastructure and technological innovations to make exporting simple and easy for U.S. businesses.
Coupang’s Rocket Overseas program has made a science out of high-speed international commerce. First, Coupang U.S. sellers ship their inventory to Coupang’s fulfillment center (FC) in Riverside, California. When a customer in Korea or Taiwan places an order, a high-speed journey begins.
Coupang Riverside Fulfillment Center employees pick, pack and ship thousands of items daily.
The Riverside FC plays a key role in the system, processing millions of orders per year through a combination of meticulous engineering, human and AI ingenuity, and obsessive optimization that is a hallmark of Coupang’s culture. Here’s a look at how this innovation is making a difference for U.S. companies.
Scale and speed
Intensive planning combined with human and artificial intelligence culminates in an extraordinary level of performance. The Riverside FC ships millions of orders every year from the U.S. to Korea and Taiwan. The average order is picked, packed, shipped and delivered in as fast as three days.
Technology enablement: More software than storage
When products arrive at the California site, Coupang’s Warehouse Management System (WMS) tracks every item coming in and out of the FC, down to its exact shelf location. The software doesn’t just store data; it dictates action, determining where an item is picked, who picks it, how it gets packed and how it ships.
Automated packing machines help workers handle most orders, reducing manual handling while speeding up the packaging line. Random stow methodology radically shortens travel times for employees who pick and pack the orders. Rather than storing items in traditional layouts where products are grouped by category, the system efficiently distributes high-demand items across the facility to put them in easy reach for workers — sometimes placing pancake mix next to dietary supplements, for instance.
A Riverside FC employee packs a shipment for a customer in Korea.
An automated system selects shipping materials for each item, helping workers pack orders faster. Coupang’s system also helps workers choose the optimal packaging to protect the product while minimizing package volume, cutting down on both shipping costs and packaging use.
Operations: The power of micro-improvements
Order volume can swing wildly by month, day, shift or even hour. To handle these rapid changes, Coupang uses AI-driven predictive analytics to staff the FC with workers precisely during peak periods of demand.
Fulfillment center leaders also keep an obsessive focus on compounding gains. The team’s processes are built around minute increments — saving one second on a parcel, taking one fewer step to pick an item, or lowering error rates by a single basis point can result in big time savings and quality improvements overall. Compounded across millions of orders, these micro-efficiencies translate into substantial savings.
Psychology and design: Where human engineering meets automation
The 256,000 square foot Riverside FC ships millions of orders per year.
Step onto the floor of Coupang’s Riverside FC, and you’ll quickly realize that the physical layout is deeply psychological. Every square foot is evaluated to support workers’ movement and comfort, with charted pathways, superior lighting and noise management.
The facility layout is designed intentionally to minimize wasted steps. The FC team includes many long-tenured associates and managers who are highly valued for their unique knowledge of the facility and their advanced problem-solving abilities — proving that smart human thinking is just as vital as automated machines.
Coupang’s U.S. fulfillment process is designed for speed. By treating every second of time, every millimeter of shelf space and every step of the international journey as an opportunity to strive even closer to perfection, Coupang continues to redefine what cross-border commerce can achieve for U.S. sellers and Asian customers alike.
Frequently asked questions
What is Coupang’s Rocket Overseas program?
It is a cross-border shipping program that enables U.S. businesses to sell and deliver products to millions of customers in South Korea and Taiwan quickly and efficiently. Sellers ship their inventory directly to Coupang’s fulfillment center in Riverside, California, which manages the international fulfillment process.
What role does technology play inside the Riverside fulfillment center?
Coupang relies on advanced technology and automation across every stage of fulfillment. The Warehouse Management System (WMS) tracks inventory down to exact shelf locations and directs picking, packing, and shipping workflows. Random stow methodology distributes high-demand items across the facility rather than grouping them by category, putting products within easy reach and reducing employee walking times. Automated packing and material selection speeds up packaging, while smart systems select the optimal box size to minimize package volume and shipping costs. Predictive AI helps accurately schedule staffing around shifting peak demand periods.
How does Coupang support worker ergonomics and efficiency on the warehouse floor?
The Riverside facility is intentionally designed to minimize wasted steps and maximize worker comfort. It features charted pathways, optimized lighting and active noise management, pairing automated machinery with experienced associates and managers who handle complex problem-solving.
