Rivr, a Zurich-based autonomous robotics startup known for its stair-climbing delivery robot, has been acquired by Amazon in a deal that signals the e-commerce giant’s interest in doorstep delivery. Terms of the deal were not disclosed.

Co-founder and CEO Marko Bjelonic, who once described the four-legged wheeled robot to TechCrunch as a “dog on roller skates,” shared news of the acquisition. On LinkedIn. Information was first. Report the contract.

Bjelonic said in his LinkedIn post that the acquisition “will accelerate our vision of building general physical AI through doorstep delivery, bringing robotics and AI closer to real-world deployment at scale,” meaning, simply put, that Amazon’s resources will help Rivr bring its robots to more doorsteps.

Last year, Rivr launched a pilot program in Austin with package delivery company Veho. At the time, he hoped to learn from the partnership with Veho and eventually reach 100 bots by 2026, Bjelonic said. It is unclear whether the company has ever been able to reach this milestone.

TechCrunch has reached out to Rivr for comment.

Rivr caught Amazon’s attention long before its pilot program. Amazon Industrial Innovation Fund and Bezos Expeditions invested in Rivr as part of a $22.2 million seed round that closed in 2024, according to PitchBook. The startup, which had raised a total of $25 million, was last valued at $100 million.