What Duolingo, Inc. told the SEC could break it.

Duolingo relies on a limited number of third-party hosting and cloud computing vendors — notably Amazon Web Services and Google Cloud — for a significant portion of its product traffic, so an outage or disruption at those providers could materially impair operations.

“A significant portion of our product traffic is hosted by a limited number of vendors, and any failure, disruption or significant interruption in our network or hosting and cloud services could adversely impact our operations and harm our business.”

Duolingo operates in China (including operating expenses there) and has previously experienced temporary disruptions to its app's availability in China; geopolitical tensions, government policy toward foreign technology companies, or regulatory uncertainty could prevent it from operating or raise its costs there.

“Moreover, geopolitical tensions or regulatory uncertainty in countries in which we operate, such as China, may prevent us from operating in certain countries or increase our costs of operating in those countries.”