Amazon Acquires Legged-Wheeled Robot Startup Rivr to Automate Last-Mile Delivery

Amazon has acquired Rivr, a Zurich-based startup developing autonomous robots with a hybrid legged-wheeled design for navigating complex urban environments like stairs. The financial terms of the deal were not disclosed. Rivr was valued at $110 million in a funding round in August 2024, which saw participation from both Amazon and Bezos Expeditions, the investment firm of Amazon founder Jeff Bezos.

What Amazon Acquired

Rivr's core technology is a robot that combines four legs with wheels, a design intended to handle the "last 50 feet" of delivery—specifically, navigating stairs, curbs, and other uneven surfaces that are impassable for traditional wheeled robots or delivery drones. The company recently released its second-generation robot platform.

Amazon confirmed the acquisition to The Information, stating: "This acquisition reflects our commitment to a continued investment in research, which we believe has the potential to further improve safety outcomes and the overall delivery experience for delivery service partners and their delivery associates."

Strategic Context: Amazon's March Toward Automation

The acquisition is a tactical move within Amazon's broader, publicly stated automation strategy. The company deployed its one-millionth robot in its fulfillment centers in the summer of 2023 and has an internal goal of automating 75% of its logistics and operations.

While Amazon's existing robotics fleet, primarily from its 2012 acquisition of Kiva Systems, is optimized for warehouse sorting and movement, Rivr's technology targets the final, most labor-intensive, and variable segment of the supply chain: residential delivery. This move follows years of experimentation with alternative delivery methods, including Scout, a wheeled sidewalk delivery robot that was discontinued in 2023 after field tests.

The Technology and Competitive Landscape

Rivr's legged-wheeled (or "wheel-legged") design places it in a niche category of mobile robots. It aims to bridge the gap between the efficiency of wheels on flat ground and the adaptability of legs on rough terrain. This is a distinct approach from Boston Dynamics' bipedal Atlas or quadruped Spot robots, which are legged-only, and from the myriad of wheeled autonomous delivery vehicles being tested by companies like Nuro, Starship, and Amazon's own former Scout.

The technical challenge of reliable, cost-effective, and safe autonomous navigation on public sidewalks and up private staircases remains significant. Rivr's second-generation platform suggests the startup was progressing toward a more mature product, making it an attractive asset for Amazon to integrate rather than develop in-house from scratch.

What's Next

The acquisition is an R&D and talent play. Amazon will likely integrate Rivr's team and technology into its extensive robotics division, Amazon Robotics, to accelerate development. The immediate application is clear: supplementing or replacing human "delivery associates" on the final leg of a delivery route, particularly in multi-story residential buildings without elevators.

However, deployment at scale faces hurdles beyond technology, including regulatory approval for autonomous devices on public walkways, safety certification, and public acceptance. Amazon's statement emphasizes improving "safety outcomes," indicating these concerns are front-of-mind.

This deal underscores that for tech giants, the race to automate logistics isn't just about warehouse efficiency or self-driving trucks—it's increasingly about conquering the complex, hyper-local geometry of the customer's doorstep.