Who backs the companies building cloud infrastructure
44 companies founded 2017 or later across 8 markets — AI & ML, Cloud cost, Compute infrastructure, Data, Developer tools, Observability, Privacy & compliance and Security — with every funding round and the 128 investors behind them. Every figure carries a source.
This is the plain-text read of a graph you need a browser with script enabled to turn. Each market below is one directory of the log, and each company one dated, sourced file in it.
AI & ML — 8 companies
- LangChain (langchain.com) — founded 2023, out of an open-source project; based in San Francisco, California; $160M across 3 rounds; backed by Benchmark, Sequoia Capital, IVP, Amplify Partners, CapitalG, Sapphire Ventures.
- OpenRouter (openrouter.ai) — founded April 2023 by Alex Atallah; reported between $40.5M and $166M; the rounds as best supported; backed by Andreessen Horowitz, Menlo Ventures, Sequoia Capital, CapitalG.
- Fastino (fastino.ai) — founded 2024; based in Palo Alto, California; ~$24.5M across 2 rounds; backed by Insight Partners, M12, Khosla Ventures, Dropbox Ventures, Valor Equity Partners.
- Portkey (portkey.ai) — founded 2023 by Rohit Agarwal and Ayush Garg; based in India; ~$18M across 2 rounds; backed by Lightspeed Venture Partners, Elevation Capital.
- dottxt (.txt) (dottxt.ai) — founded 2023 by Rémi Louf; Seedtable also lists Brandon Willard and Dan Gerlanc as co-founders, and only Louf is corroborated elsewhere; based in Paris / Île-de-France per the aggregators, but the team is "fully distributed across the United States and Europe" and the footer reads "dottxt, Inc.", so the US entity is the legal one. Louf reportedly works from a rented office in a castle in Bourron-Marlotte; team of ~15-27, unresolved. Louf has said 15, mostly engineers; Builtin lists 27; Dealroom gives an 11-50 band; ~$12M across 2 rounds, no valuation disclosed; backed by Elaia Partners, EQT Ventures.
- Maxim AI (getmaxim.ai) — founded 2023 by Vaibhavi Gangwar and Akshay Deo; based in distributed, with offices in India and the US; $3M across 1 round; backed by Elevation Capital.
- LiteLLM (litellm.ai) — founded 2023 by Krrish Dholakia and Ishaan Jaffer; Y Combinator Winter 2023; based in San Francisco, California; $1.6M across 1 round; backed by Y Combinator, Gravity Fund, Pioneer Fund.
- Helicone (helicone.ai) — founded 2023 by Justin Torre, with Cole Gottdank, Scott Nguyen and Barak Oshri named as co-founders by one source; other sources list fewer; based in San Francisco, California; not settled; figures range from $500K to $5M; backed by Y Combinator.
Cloud cost — 14 companies
- ScaleOps (scaleops.com) — founded 2022 by Yodar Shafrir and Guy Baron; based in New York — though CB Insights lists Tel Aviv and the legal entity is Israeli; engineering roles are posted in Tel Aviv; team of roughly 100-155, and moving fast — TechCrunch says headcount tripled in the 12 months to Mar 2026 and was projected to more than triple again by year-end. Aggregators give 103 and 153; Calcalist said "more than 120"; ~$210M across 4 rounds; backed by Lightspeed Venture Partners, NFX, Glilot Capital Partners, Picture Capital, Insight Partners.
- Cast AI (cast.ai) — founded 2019 by Yuri Frayman, Leon Kuperman and Laurent Gil — all three previously founded Zenedge, sold to Oracle; based in Miami, Florida, with its largest engineering hub in Vilnius, Lithuania; team of 300+ across 30+ countries as of Jan 2026; 6 rounds, amounts not disclosed; backed by Cota Capital, Creandum, G2 Venture Partners, SoftBank Vision Fund 2, Aglaé Ventures, Pacific Alliance Ventures.
- Zesty (zesty.co) — founded 2019; based in Tel Aviv, Israel; $116.6M across 3 rounds; backed by S Capital, Next47, Sapphire Ventures, Samsung Next, B Capital.
- Finout (finout.io) — founded 2020 by Roi Ravhon, Asaf Liveanu and Yizhar Gilboa, with Team8 co-founder Liran Grinberg named a co-founder by Startup Nation Central; based in Tel Aviv, Israel, with a New York presence; $84.8M across 4 rounds; backed by Pitango First, Team8 Capital, Red Dot Capital Partners, Maor Investments, Jibe Ventures, Insight Partners.
- ProsperOps (prosperops.com) — founded 2018; Chris Cochran is CEO; based in Austin, Texas; $72.8M total per PitchBook, of which one disclosed round accounts for $72M; history ends at the January 2026 acquisition; backed by H.I.G. Growth Partners, Active Capital.
- nOps (nops.io) — founded 2017; based in San Francisco, California; team of ~60 at the Series A, with a stated plan to reach 80 by end of 2024. No later figure found; $40.5M reported total, of which $30M is from the one named round; backed by Headlight Partners.
- Sedai (sedai.io) — founded 2018 by Suresh Mathew, with Benjamin Thomas named a co-founder by one profile; based in Pleasanton, California; ~$38.8M across 3 rounds; backed by Sierra Ventures, Uncorrelated Ventures, Norwest Venture Partners, Atlantic Vantage Point.
- Kubecost (kubecost.com) — founded 2019 by Webb Brown and Ajay Tripathy, who had worked on infrastructure monitoring at Google; $25M across 1 well-sourced round; history ends at the September 2024 acquisition; backed by Coatue Management, First Round Capital, Afore Capital.
- Vantage (vantage.sh) — founded 2020 by Ben Schaechter and Brooke McKim, both former product leaders at DigitalOcean and AWS; based in New York City, with a distributed US team; team of 75 — a May 2026 job posting said ~55, so treat 75 as the current figure and the gap as stale copy somewhere; $25M+ across 2 rounds, no valuation ever disclosed; backed by Andreessen Horowitz, Scale Venture Partners, Harpoon Ventures, Matthew Prince.
- Antimetal (antimetal.com) — founded 2022 by Matthew Parkhurst and Shreyas Iyer; based in New York, New York; $24.3M across 2 rounds; backed by Buckley Ventures, Sound Ventures, Framework Ventures, Chapter One.
- Archera (archera.ai) — founded 2019 as Reserved.ai, by Aran Khanna and Nikhil Khanna; one profile instead names Daniel Christianto, which the Series A coverage does not support; based in Bellevue, Washington. The 2021 Series A release carries a Seattle dateline, so one of the two is out of date; ~$24M across 2 rounds; backed by Ridge Ventures, Amplify Partners, PSL Ventures, Leslie Ventures, Stephen Garden, HighSage Ventures.
- Blocks (blocks.cloud) — founded by Oliver Merkel and Andreas Schroeter — founding year not confirmed by any source; first round dates to Oct 2025; based in Berlin, Germany; team of 11–50; ~$6M disclosed across 2 rounds; backed by Felix Jahn, BLN Capital, Speedinvest, Caesar Ventures.
- Chaos Genius (chaosgenius.io) — founded 2021; Preeti Shrimal was CEO and is now an EVP at Flexera; team of ~10 at the time of the acquisition, per a startup directory — unverified; $3.3M across 1 disclosed round; history ends at the January 2026 acquisition; backed by Elevation Capital, Y Combinator.
- Pump (pump.co) — founded Y Combinator S22 batch, by Spandana Nakka; no priced round disclosed; backed by Y Combinator.
Compute infrastructure — 2 companies
- Modal Labs (modal.com) — founded 2021 by Erik Bernhardsson and Akshat Bubna; based in New York, NY — plus San Francisco and Stockholm; team of 120+ as of May 2026; one later report says ~170; ~$1.2B across 5 rounds; backed by Amplify Partners, Redpoint Ventures, Lux Capital, Definition, General Catalyst, Accel, Kleiner Perkins.
- Hivenet (hivenet.com) — founded 2022 by David Gurlé, as Hive / Hive Computing Services SA; rebranded to Hivenet in 2024; based in Geneva, Switzerland; French press calls it Cannes-based, and Antimatter's launch release is datelined Cannes; team of sources disagree — Wikipedia lists 75 employees, a third-party profile estimates ~40. Neither is a filing.; ~€19M disclosed across 2 rounds (CB Insights counts 3 rounds / ~$20.5M, so one round is unaccounted for here); backed by Global Ventures, OneRagtime, SC Ventures.
Data — 2 companies
- Qdrant (qdrant.tech) — founded 2021 in Berlin by André Zayarni and Andrey Vasnetsov; based in Berlin, Germany; ~$87.8M across 4 rounds; backed by Unusual Ventures, 42CAP, IBB Ventures, Spark Capital, AVP, Bosch Ventures.
- Weaviate (weaviate.io) — founded company dates to 2019; the open-source project started earlier, around 2016. Founded by Bob van Luijt and Etienne Dilocker; Dealroom also lists Micha Verhagen as a co-founder; based in Amsterdam, Netherlands, though the company describes itself as a "global remote-first startup"; team of 90+ per the company's own about page; Latka reported 104 as of Dec 2024; 4 rounds, amounts not disclosed; backed by Zetta Venture Partners, ING Ventures, NEA, Cortical Ventures, Index Ventures, Ricoh Innovation Fund.
Developer tools — 2 companies
- Encore (encore.dev) — founded 2021 by André Eriksson and Marcus Kohlberg; began as Eriksson's side project in 2017; based in Stockholm, Sweden — "a team of engineers across Europe"; ~$9.8M disclosed across 2 rounds; backed by Crane Venture Partners, Acequia Capital, Essence VC, Third Kind VC, DIG Ventures, Alliance VC.
- Perfloop (perfloop.ai) — based in Los Altos, California; one seed round, amount not officially disclosed; backed by Mango Capital.
Observability — 4 companies
- Cribl (cribl.io) — founded July 2018 by Clint Sharp, Ledion Bitincka and Dritan Bitincka — all ex-Splunk; based in San Francisco, California; team of ~1,000 employees as of 2025, up from ~700 in 2024; ~$715M disclosed across 6 rounds; backed by Sequoia Capital, Greylock Partners, Redpoint Ventures, Tiger Global Management, GV.
- Dash0 (dash0.com) — founded 2023 in Germany by Mirko Novakovic, with a founding team of Ben Blackmore, Michele Mancioppi, Miel Donkers and Marcel Birkner; based in New York, USA — "Founded in Germany in 2023 and headquartered in New York" per the company; German sources still list Solingen and a Berlin presence, and the team was fully remote at the seed; team of 21 people as of the Nov 2024 seed — the only sourced headcount found; the about page now lists 47 open roles but no total; $155M across 3 rounds; backed by Accel, DIG Ventures, Cherry Ventures, Balderton Capital, DTCP Growth, July Fund, T.Capital.
- OllyGarden (ollygarden.com) — founded 2025 by Juraci Paixão Kröhling — OpenTelemetry governance committee member, Jaeger and OTel Operator maintainer, ex-Grafana Labs and ex-Red Hat; based in Berlin, Germany; team of ~10 employees; ~$5.6M disclosed across 2 rounds; backed by Grafana Labs, Datadog Ventures, DIG Ventures, Dash0, Next Frontier Capital, Grand Ventures, ACTAI Ventures.
- Polylane (polylane.com) — founded 2026 by Boris Tane — the GitHub org was created 2026-02-28, consistent with a 2026 start; based in San Francisco, CA, US — "in person, in San Francisco", no remote roles; team of single digits — described only as "a small team", with Founding Engineer / Growth / Researcher roles open; 1 round, amounts not disclosed; backed by CRV, Vermilion Cliffs Ventures.
Privacy & compliance — 7 companies
- Securiti (securiti.ai) — founded 2019 by Rehan Jalil, who previously founded Elastica. One source says founded 2018 and incorporated 2019; based in San Jose, California; ~$156M across 4 rounds; history ends at the December 2025 acquisition; backed by Sorenson Capital, Citi Ventures.
- Skyflow (skyflow.com) — founded 2019 by Anshu Sharma and Roshmik Saha; based in Palo Alto, California; team of roughly 100-140, all third-party and dated: Levels.fyi lists 126, one aggregator 140, a podcast "over 100"; $100M across 4 rounds, no valuation ever disclosed; backed by Foundation Capital, Canvas Ventures, Insight Partners, Khosla Ventures, Mouro Capital.
- Tonic.ai (tonic.ai) — founded 2018 or 2019 — Dealroom says early 2018, TechCrunch says the company launched in 2019; based in San Francisco, California; ~$45M total, of which $35M is the one well-sourced round; backed by Insight Partners, GGV Capital, Bloomberg Beta.
- Limina (getlimina.ai) — founded 2019, as Private AI; based in Toronto, Canada; ~$11M across 2 rounds; backed by M12, Forum Ventures, Differential Ventures, BDC Capital.
- Neosync (neosync.dev) — founded unsettled — PitchBook says 2021, Tracxn 2022, Y Combinator 2023; based in San Francisco, California; team of 5 at the time of the revenue figure below; ~$500K reported, no priced round found; backed by Y Combinator.
- Grepture (grepture.com) — based in Germany — a third-party listing cites Frankfurt and Nuremberg hosting; nothing disclosed. No round, investor or founding date surfaced..
- Occludra (occludra.ai) — nothing disclosed. No round, investor or founding date surfaced..
Security — 5 companies
- Cyera (cyera.com) — founded 2021 by Yotam Segev and Tamar Bar-Ilan; well over $1.5B disclosed; the rounds below are the ones with named sources; backed by Accel, Sapphire Ventures, Sequoia Capital, Redpoint Ventures, Coatue Management, Georgian, Blackstone, Evolution Equity Partners.
- Protect AI (protectai.com) — founded 2022; based in Seattle, Washington, with offices in Berlin and Bangalore; team of ~120 at the time of the acquisition; ~$109M across 3 rounds; history ends at the July 2025 acquisition.
- Nightfall AI (nightfall.ai) — founded 2018; based in San Francisco, California; ~$60-63M reported; the named round; backed by WestBridge Capital, Next Play Capital, Bain Capital Ventures, Venrock, Pear VC.
- Prompt Security (prompt.security) — founded 2023 by Itamar Golan and Lior Drihem, both previously at Check Point; based in Tel Aviv, Israel; ~$23M across 2 rounds; history ends at the September 2025 acquisition; backed by Hetz Ventures, Jump Capital.
- Trylon AI (trylon.ai) — nothing disclosed. No round, investor or founding date surfaced in any source..
How this log is kept
One file per company, appended to rather than rewritten, so an entry that later turns out to be wrong stays visible beside the correction. Companies founded before 2017 are answered but not kept. Figures are given in the currency they were reported in and are never converted.