Accel, Uncorrelated Ventures, and other investors led a $3.85 million investment round for data infrastructure firm S2.dev. The startup was chosen in the Fall 2025 batch and has previously received support from Y Combinator. To date, the company has raised $5.5 million.

Key Highlights

• S2.dev secures $3.85 Mn in Accel-led funding to accelerate product development and market expansion.
• Funding will strengthen data infrastructure platform, boost hiring, and support global customer growth.

According to a news release from S2.dev, the new funding will be used to serve early enterprise clients, extend its managed cloud service to more worldwide locations, and speed up product development.

S2.dev, which was co-founded in 2024 by Shikhar Bhushan, Stephen Balogh, and Dwarak Govind Parthiban, offers a serverless datastore for streaming, real-time data that is intended to support multiplayer, collaborative, and agent-based applications. The platform combines low latency performance for developers with long-lasting, auto-scaling streams that are accessible through REST.

The primary offering from S.dev is a serverless streaming database platform that lets programmers handle stateful data and fast-moving, real-time data publishing without worrying about infrastructure management. For modeling domain data, the startup's infinite streams functionality generates on-demand streams that may be walled, taken from, and appended to.

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S.dev claims that its product is focused on long-lasting streams and seeks to turn streams into a rudimentary kind of cloud storage. These streams may consist of messages exchanged between several agents or token output in artificial intelligence (AI) systems.

Tools like Apache Kafka and cloud services like Amazon Kinesis, which businesses employ to manage real-time data including clicks, purchases, monitoring events, and app notifications, currently dominate the market.