Arroyo is a serverless stream processing platform built on top of the open-source Arroyo streaming engine. We allow companies to transform, filter, aggregate, and join their Kafka streams in real-time just by writing SQL.
Arroyo is a Y Combinator company in the Winter 2023 batch. Its directory entry describes it as: Cloud-native stream processing. The founder listed is Micah Wylde (Founder) (Y Combinator directory entry, January 24, 2023).
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New accelerator entry · 2023-01-24 · the record
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Arroyo is a serverless stream processing platform built on top of the open-source Arroyo streaming engine. We allow companies to transform, filter, aggregate, and join their Kafka streams in real-time just by writing SQL. We charge purely based on usage, with no fixed costs or clusters to manage. In 2025, Arroyo was acquired by Cloudflare and now powers Cloudflare Pipelines
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