Arroyo YC Application

Winter 2023Acquired

Arroyo went through Y Combinator in the Winter 2023 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Winter 2023
Industry: B2BInfrastructure
Team size: 2
Status: Acquired
Launched: 2023

Founders

Micah WyldeFounder

What Arroyo does

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

Arroyo's YC application, reconstructed

Y Combinator application

Arroyo, Winter 2023 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Arroyo

Describe what your company does in 50 characters or less.

Cloud-native stream processing

What is your company going to make? Please describe your product and what it does or will do.

We built a serverless stream processing platform on top of the open-source Arroyo streaming engine. It lets companies run SQL queries on their Kafka streams to transform, filter, aggregate, and join data in real time without managing clusters. Customers pay based purely on usage.

Where do you live now, and where would the company be based after YC?

We live and work in Berkeley, California, and the company is based here too.

Explain your decision regarding location.

We stayed in Berkeley because it's where we started building Arroyo and it has the developer and cloud ecosystems we depend on.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real Arroyo YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Arroyo's public data (launch notes, founder backgrounds, product description). It shows how a company like Arroyo would present itself to YC, not the text they submitted.