
Cloudflare
The network in front of a large share of the web, for speed, security and serverless apps.
Public · NYSE:NET- Sector
- Cloud
- Based in
- San Francisco, United States
- Founded
- 2009
- Invested
- Mar 2023
Cloudflare runs a global network, with data centres in hundreds of cities, that sits in front of websites and apps. It caches content close to users, blocks attacks such as DDoS, and provides DNS, including the public 1.1.1.1 resolver.
On top of that network it sells Zero Trust security for company networks, and a developer platform (Workers, R2 storage, D1 databases and AI inference) that runs code close to users instead of in one central region.
Matthew Prince, Michelle Zatlyn and Lee Holloway founded Cloudflare in 2009 and launched it publicly in 2010. It listed on the New York Stock Exchange in 2019.
As of 29 Sep 2026
Why I own it
Cloudflare runs one of the largest networks on the internet and sits in front of a big share of the web. It has built a developer platform on top, so code and AI can run close to users everywhere. I build on it myself, including this site.
As AI agents browse, fetch and act on the web, much of that traffic will pass through Cloudflare. It's positioned to be the layer that decides how AI reaches websites, and how websites get paid for it.
Then · Mar 2023
Since I invested
- Held for
- 3 years, 7 months
- Status
- Active
- Share price, past year
- +55%
- In the notebook
- 1 note
Thesis check since 29 Sep 2026
5 developments support it, 0 challenge it
- SupportsWe are introducing Clef and Clef-flash, open-source decision models hosted on Workers AI for high-speed classification a
- SupportsWorkers KV Instant delivers sub-2ms p99 read latencies and 250ms global replication across Cloudflare’s 300+ edge locati
- SupportsCloudflare is hosting a competition to see who will build the next Git platform for an era of AI agents. Artifacts is in
Checked against the thesis by Jev, an AI model. Can be wrong.
From the notebook
All notesPeople
Cloudflare's long-serving CFO takes an outside board seat at Crusoe
Thomas Seifert, Cloudflare's chief financial officer since 2017, joined the board of AI data centre company Crusoe on 17 September, alongside Tesla and Redwood Materials founder JB Straubel. Seifert keeps his day job running Cloudflare's finances, but the move puts him on the board of a firm building the physical AI infrastructure that companies like Cloudflare increasingly rent and compete with.
Since this note:Cloudflare −2.1%Tesla +1.2%(S&P 500 +0.6%)
Written by AI from share prices, the companies' posts and the news. Can be wrong; not financial advice.
Latest on X
@Cloudflare
Cloudflare@Cloudflare · 8 OctSecurity alerts don't arrive one at a time. They flood in.
To solve alert fatigue, we built an evidence-grounded agentic security harness for Cloudflare Managed Defense.
How it works:
• Locks down scope boundaries in code before inference
• Delivers consolidated, evidence-backed insights with zero hallucinations
•Taps advanced models like GPT-5.6 Cyber and Mythos with @OpenAI and @Anthropic
Full breakdown: https://blog.cloudflare.com/agentic-security-operations?utm_campaign=cf_blog&utm_content=20261007&utm_medium=organic_social&utm_source=twitter1414
Cloudflare@Cloudflare · 8 OctThe decisions you make today prepare you for tomorrow. @zatlyn's advice is to immerse yourself at #CloudflareConnect: meet others, go to the sessions, and learn. Join us from October 19–21 at Moscone West in SF. Register here: https://cfl.re/45aFML0
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Cloudflare@Cloudflare · 7 OctOn October 11, 2026, the DNS root switches to a new key-signing key (KSK-2024). Learn what this means for you, and how RFC 8509 trust anchor sentinels allow you to test whether your DNS resolver is ready for the rollover. https://blog.cloudflare.com/root-ksk-2024-rollover/820114
Cloudflare@Cloudflare · 5 OctReal products, big impact, and unmatched energy. ⚡
From San Francisco to Lisbon and everywhere in between, our interns are driving massive impact!
We’re so excited to watch them learn, and leverage cutting-edge tech to shape the future of the Internet. More details, tomorrow.
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Cloudflare@Cloudflare · 4 OctCloudflare #BirthdayWeek celebrations were happening around the world! See some snapshots from our hubs. Follow along for all announcements: https://cfl.re/4z7aNwe
Can you guess which Cloudflare office was each of the photos taken in?
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