{{Short description|Cloud infrastructure monitoring platform acquired by Splunk for $1.05 billion in 2019}} {{Infobox company | name = SignalFx | type = Subsidiary | parent = Splunk | founded = {{Start date and age|2013}} | founders = {{ubl|Karthik Rau| Phillip Liu}} | hq_location_city = San Mateo, CA | key_people = {{unbulleted list|Karthik Rau (CEO)|Mark Cranney (COO)}} | num_employees = 200+ | website = {{URL|http://www.signalfx.com/|signalfx.com}} | logo = SignalFx Logo.png }}
'''SignalFx''' was a cloud-based monitoring and analytics platform now owned by Splunk Inc'''.''', who acquired the company in 2019<ref>{{Cite web |last=Whiting |first=Rick |title=Splunk To Acquire Cloud App Monitoring Vendor SignalFx In $1 Billion Deal {{!}} CRN |url=https://www.crn.com/news/data-center/splunk-to-acquire-cloud-app-monitoring-vendor-signalfx-in-1-billion-deal |archive-url=http://web.archive.org/web/20240523193625/https://www.crn.com/news/data-center/splunk-to-acquire-cloud-app-monitoring-vendor-signalfx-in-1-billion-deal |archive-date=2024-05-23 |access-date=2025-10-20 |website=www.crn.com}}</ref> and integrated its technology into the Splunk Observability Cloud.<ref>{{Cite web |title=Splunk debuts Observability Suite, which integrates SignalFx, Omnition technology into one platform |url=https://www.zdnet.com/article/splunk-debuts-observability-suite-which-integrates-signalfx-omnition-technology-into-one-platform/ |access-date=2025-10-20 |website=ZDNET |language=en}}</ref>
Originally founded as an independent SaaS company headquartered in San Mateo, California, SignalFx provided tools for analyzing, visualizing, automating, and alerting on metrics data from infrastructure, applications, microservices, containers, and functions.<ref>{{cite web | url=https://techcrunch.com/2015/03/12/signalfx-emerges-from-stealth-to-modernize-cloud-application-monitoring/ | title=SignalFX Emerges From Stealth To Modernize Cloud Application Monitoring | publisher=Techcrunch | date=12 March 2015 | accessdate=15 June 2016 | author=Ron Miller}}</ref><ref>{{cite web | url=http://www.officelovin.com/2015/11/02/a-look-inside-signalfxs-new-san-mateo-office/ | title=A Look Inside SignalFX's New San Mateo Headquarters | date=2 November 2015 | publisher=Office lovin | accessdate=15 June 2016}}</ref> The system used a streaming architecture that separated metric data into two streams—one for metadata and another for time-series values processed through a publish-subscribe bus and an analytics language called SignalFlow.<ref>{{cite web | url=http://thenewstack.io/signalfx-a-saas-to-monitor-apps-at-any-scale/ | title=SignalFx, a SaaS to Monitor Apps at Any Scale | publisher=The New Stack. | accessdate=15 June 2016 | author=Alex Williams| date=12 March 2015 }}</ref><ref>{{cite web | url=http://siliconangle.com/blog/2015/03/12/signalfx-exits-stealth-with-a-whole-new-approach-to-application-monitoring/ | title=SignalFx exits stealth with a whole new approach to application monitoring | publisher=Silicon Angle | date=12 March 2015 | accessdate=15 June 2016 | author=Paul Gillin}}</ref>
==History== SignalFx was co-founded by Karthik Rau and Phillip Liu in February 2013. SignalFx received $8.5 million in Series A funding from Andreessen Horowitz, with Ben Horowitz joining its board.<ref>{{cite web | url=http://www.bizjournals.com/sanjose/blog/techflash/2015/03/signalfx-emerges-from-stealth-with-28-5m-in.html | title=SignalFX emerges from stealth with $28.5M in funding | publisher=Biz Journals | date=12 March 2015 | accessdate=15 June 2016 | author=Gina Hall}}</ref> In 2015, SignalFx received $20 million in Series B funding led by Charles River Ventures, with participation from Andreessen Horowitz; Devdutt Yellurkar joined the board.<ref>{{cite web | url=https://venturebeat.com/2015/03/12/signalfuse-rebrands-as-signalfx-with-an-infrastructure-monitoring-app-and-28-5m/ | title=SignalFuse rebrands as SignalFx with an infrastructure-monitoring app and $28.5M | publisher=Venturebeat | date=12 March 2015 | accessdate=15 June 2016 | author=Jordan Novet}}</ref><ref>{{cite web | url=https://www.forbes.com/sites/benkepes/2015/03/12/signalfx-emerges-from-stealth-replete-with-new-20m-funding/#72e8dd8c7f33 | title=SignalFX Emerges From Stealth Replete With New $20M Funding | work=Forbes | date=12 March 2015 | accessdate=15 June 2016 | author=Ben Kepes}}</ref><ref name="wsj1">{{cite web |last=Gage |first=Deborah |date=12 March 2015 |title=SignalFX Signs In With $28.5M for Application Monitoring |url=https://www.wsj.com/articles/DJFVW00120150312eb3cau4co |work=The Wall Street Journal}}</ref><ref>{{cite web | url=http://www.xconomy.com/san-francisco/2015/03/12/signalfx-raises-20m-launches-monitoring-tool-for-web-based-apps/ | title=SignalFx Raises $20M, Launches Monitoring Tool for Web-Based Apps | publisher=Xconomy | date=12 March 2015 | accessdate=15 June 2016 | author=Bernadette Tansey}}</ref> In May 2018, SignalFx announced its Series D funding of $45{{nbsp}}million led by General Catalyst, with participation from existing investors Andreessen Horowitz and Charles River Ventures. In June 2019, the company raised $75{{nbsp}}million in its Series E round led by Tiger Global Management, bringing the company's total funding to $179{{nbsp}}million.<ref>{{Cite news|url=https://venturebeat.com/business/signalfx-raises-75-million-to-monitor-cloud-apps-services-and-environments-in-real-time/|title=SignalFx raises $75 million to monitor cloud apps, services, and environments in real time|work=VentureBeat |date=12 June 2019| first=Kyle |last=Wiggers |language=en-US}}</ref>
SignalFx served customers including Athenahealth, Chairish, Ellie Mae, Carbon black, Kayak, Shutterfly, Sunrun, and Yelp.<ref>{{cite web | url=http://www.apmdigest.com/signalfx-emerges-from-stealth-and-unveils-advanced-monitoring-platform | title=SignalFx Emerges from Stealth and Unveils Advanced Monitoring Platform | publisher=APM Digest | date=12 March 2015 | accessdate=15 June 2016}}</ref><ref>{{Cite web|url=https://signalfx.com/customers/|title=Customers {{!}} SignalFx|website=SignalFx|language=en-US|access-date=2016-06-15}}</ref>
=== Splunk acquisition === SignalFx was acquired by Splunk on August 21, 2019, for $1.05 billion. The acquisition aimed to enhance Splunk's cloud-native observability and APM capabilities, integrating SignalFx into Splunk’s Observability Suite.<ref>{{cite web |last=Wiggers |first=Kyle |date=21 August 2019 |title=Splunk acquires cloud monitoring platform SignalFx for $1.05 billion |url=https://venturebeat.com/business/splunk-acquires-signalfx-for-1-05-billion/ |work=VentureBeat}}</ref><ref>{{Cite web |title=Splunk to Acquire Cloud Monitoring Leader SignalFx |url=https://www.splunk.com/en_us/newsroom/press-releases/2019/splunk-to-acquire-cloud-monitoring-leader-signalfx.html#:~:text=price%20of%20approximately-,$1.05%20billion,-,%20subject%20to%20adjustment |access-date=2025-01-29 |website=Splunk |language=en}}</ref> The acquisition consisted of 60% cash ($630 million) and 40% Splunk common stock (SPLK). The transaction closed on October 2, 2019.<ref>{{Cite web |title=Splunk Closes Acquisition of Cloud Monitoring Leader SignalFx |url=https://www.splunk.com/en_us/newsroom/press-releases/2019/splunk-closes-acquisition-of-cloud-monitoring-leader-signalfx.html |access-date=2025-01-29 |website=Splunk |language=en}}</ref> SignalFx became part of the Splunk Cloud Platform and, following Cisco’s acquisition of Splunk in March 2024, came under Cisco’s ownership.<ref>{{Cite web |last=Thurai |first=Andy |date=2024-04-12 |title=HOT TAKE: Cisco completes Splunk Acquisition - Constellation’s Take. |url=https://www.constellationr.com/blog-news/hot-take-cisco-completes-splunk-acquisition-constellation-s-take |access-date=2025-10-21 |website=Constellation Research Inc. |language=en}}</ref>
==References== {{Reflist}}
==External links== * {{Official|https://signalfx.com}}
Category:2013 establishments in California Category:2019 mergers and acquisitions Category:Software companies based in California Category:Defunct software companies of the United States Category:Splunk
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