What Does Fanout Do?

Total employees3
HeadquartersMenlo Park
Founded2011

Fanout was a technology company that specialized in providing real-time messaging infrastructure for developers. Their platform enabled businesses to easily build and scale applications requiring live data push, such as chat, live updates, data broadcasting, and real-time APIs using WebSockets, Server-Sent Events (SSE), and HTTP streaming. Founded in 2013, Fanout empowered developers to focus on application logic rather than complex real-time infrastructure. In March 2022, Fanout was acquired by Fastly, Inc. to integrate its technology into Fastly's edge cloud platform, enhancing Fastly's offerings in real-time and event-driven services.

Where Is Fanout's Headquarters?

HQ Function

Served as the primary center for Fanout's operations, including product development, engineering, business strategy, and administration prior to its acquisition by Fastly.

Notable Features:

As a startup, Fanout's headquarters likely featured a collaborative and agile workspace optimized for innovation and rapid development, characteristic of tech companies in Silicon Valley.

Work Culture:

Fanout likely fostered an energetic startup culture characterized by innovation, engineering excellence, close-knit teams, and a strong focus on solving complex technical challenges in real-time messaging and API services.

HQ Significance:

Being located in Menlo Park provided Fanout with strategic advantages, including access to a rich talent pool, proximity to investors, and immersion in a vibrant tech ecosystem conducive to growth and partnerships.

Values Reflected in HQ: The choice of a Silicon Valley location and a functional, collaborative workspace likely reflected Fanout's core values of innovation, technical prowess, agility, and efficient resource utilization.

Location:

Prior to its acquisition by Fastly, Fanout's services were designed for global accessibility, enabling developers and businesses worldwide to utilize its real-time messaging infrastructure. While its physical operations were primarily based in the United States, its platform and APIs catered to an international customer base needing to build and scale real-time applications. Following the acquisition, Fanout's technology has been integrated into Fastly's extensive global edge cloud network.

Street Address:

2093 Avy Ave

City:

Menlo Park

State/Province:

California

Country:

USA

Where Else Does Fanout Operate Around the World?

No additional office locations available.

Buying Intent Signals for Fanout

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Fanout? Meet the Executive Team

As of April 2025, Fanout' leadership includes:

Justin Karneges - Co-founder & CEO
Eric Burns - Co-founder & CTO

Who's Investing in Fanout?

Fanout has been backed by several prominent investors over the years, including:

Y Combinator
Traction Lode Capital
Haystack
Liquid 2 Ventures
SV Angel
Amino Capital
Precursor Ventures
Paul Buchheit
Alexis Ohanian
Webb Investment Network

What Leadership Changes Has Fanout Seen Recently?

Hire0
Exits0

As Fanout was acquired by Fastly in March 2022 and integrated into Fastly's operations, it no longer functions as an independent entity. Consequently, there have been no executive new hires or exits specifically attributable to 'Fanout' as a standalone company in the last 12 months. Key leadership from Fanout transitioned to roles within Fastly at the time of the acquisition.

What Technology (Tech Stack) Is Used byFanout?

Discover the tools Fanout uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Fanout Email Formats and Examples

Prior to its acquisition by Fastly, Fanout, Inc. utilized the fanout.io domain for its corporate communications. Based on common practices for technology startups and available data, the most likely email format was based on the first name.

[first]@fanout.io

Format

justin@fanout.io

Example

85%

Success rate

What's the Latest News About Fanout?

Fastly BlogMarch 29, 2022

Fanout News: Fastly Acquires Fanout to Supercharge Real-Time and Edge Messaging

Fastly, Inc. announced its acquisition of Fanout, a platform for building and scaling real-time APIs. The acquisition aims to integrate Fanout's technology into Fastly's edge cloud platform, enabling developers to build and deploy event-driven applications and real-time messaging services with greater ease and performance. Fanout's team, including its founders, joined Fastly as part of the transaction....more

TechCrunchMarch 24, 2014

Fanout News: Fanout Launches from Y Combinator to Simplify Real-Time Data Push for Developers

Fanout, a graduate of Y Combinator's Winter 2014 batch, officially launched its platform designed to help developers easily add real-time data push capabilities to their applications. The service aimed to handle the complexities of real-time infrastructure, such as WebSockets and HTTP streaming, allowing developers to focus on their core product features rather than managing persistent connections....more

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