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Streams as a cloud storage primitive

S2 is a serverless datastore for real-time, streaming data. The more we worked on data systems, the more we felt like there was a missing building block. The seamless experience of object storage simply did not exist for durable streams – so we set out to fix that! S2 reimagines streams as an unlimited and access-controlled web resource. Like if Kafka and S3 had a baby. - Building agents? Use granular streams to persist context in real time, make workflows auditable, and coordinate between agents. - Publishing fast-moving data? Streams support high fanout and can be accessed directly over the internet, so they are a great fit for broadcasting real-time feeds. - Sandboxing? Emit to per-instance streams, and read history or live events just as easily. - Local-first and multiplayer experiences? Propagate updates reliably and efficiently. Stop dealing with clusters, and start streaming.
Active Founders
Shikhar Bhushan
Shikhar Bhushan
Co-founder and CEO
Making streams plentiful and serverless. Hacked on retrieval systems at Etsy, a KV store at Facebook, and Kafka Connect at Confluent.
Stephen Balogh
Stephen Balogh
Co-founder and CTO
Loves Rust, and building systems that scale. Previously built novel infra for multi-modal product search at Etsy, and digital repository software at NYU
Dwarak Govind Parthiban
Dwarak Govind Parthiban
Co-founder
Passionate about systems and AI. Worked on applied AI at Etsy, ML platform at Freshworks. Researched on language models at uOttawa and published at AAAI-21.
YC Photos
s2.dev
Founded:2023
Batch:Fall 2025
Team Size:4
Status:
Active
Location:San Francisco
Primary Partner:Nicolas Dessaigne