SignalFx
# SignalFx

SignalFx is a SaaS-based monitoring and analytics platform based in San Mateo, California, which allows customers to analyze, visualize, automate, and alert on metrics data from infrastructure, applications, microservices, containers, and functions. The platform utilizes a streaming architecture to separate metric data points into two streams: one for metadata and one for time-series values. These data streams are routed through a pub-sub bus to SignalFlow, an analytics language accessible via the SignalFx GUI and programmable APIs. With impressive speed and efficiency, the platform can handle millions of data points per second at a 1-second resolution, achieving less than 2 seconds of latency from ingestion to alert.

## History

SignalFx was co-founded by Karthik Rau and Phillip Liu in February 2013. Phillip Liu previously worked at Facebook for four years as a software architect and Karthik Rau worked at Delphix and VMware. SignalFx received $8.5 million in a Series A investment from Andreessen Horowitz, adding Ben Horowitz to its board. In 2015 Signal Fx received $20 million in Series B investment led by Charles River Ventures with participation from Andreessen Horowitz, adding Devdutt Yellurkar to its board. In May 2018, SignalFx announced its Series D funding of $45 million led by General Catalyst with participation from the existing investors Andreessen Horowitz and Charles River Ventures. In June 2019, the company raised $75 million in its Series E round led by Tiger Global Management, bringing the companies total funding to $179 million since its founding.

SignalFx currently serves over a hundred customers, including Athenahealth, Chairish, Ellie Mae, Carbonblack, Kayak, Shutterfly, Sunrun, and Yelp.

On August 21, 2019, SignalFx was acquired by Splunk for $1 billion.

