Modern applications are not monoliths. They are complex, distributed systems where availability depends on multiple independent components working in harmony. A web server might be running, but if its connection to the database is down or the authentication service is unresponsive, the application as a whole is unhealthy. Relying on a single health check is […]
Archive by Author
Improving the trustworthiness of Javascript on the Web
The web is the most powerful application platform in existence. As long as you have the right API, you can safely run anything you want in a browser. Well… anything but cryptography. It is as true today as it was in 2011 that Javascript cryptography is Considered Harmful. The main problem is code distribution. Consider […]
Introducing REACT: Why We Built an Elite Incident Response Team
Cloudforce One’s mission is to help defend the Internet. In Q2’25 alone, Cloudflare stopped an average of 190 billion cyber threats every single day. But real-world customer experiences showed us that stopping attacks at the edge isn’t always enough. We saw ransomware disrupt financial operations, data breaches cripple real estate firms, and misconfigurations cause major […]
15 years of helping build a better Internet: a look back at Birthday Week 2025
Cloudflare launched fifteen years ago with a mission to help build a better Internet. Over that time the Internet has changed and so has what it needs from teams like ours. In this year’s Founder’s Letter, Matthew and Michelle discussed the role we have played in the evolution of the Internet, from helping encryption grow […]
Introducing Observatory and Smart Shield — see how the world sees your website, and make it faster in one click
Modern users expect instant, reliable web experiences. When your application is slow, they don’t just complain — they leave. Even delays as small as 100 ms have been shown to have a measurable impact on revenue, conversions, bounce rate, engagement and more. If you’re responsible for delivering on these expectations to the users of your […]
Cloudflare just got faster and more secure, powered by Rust
Cloudflare is relentless about building and running the world’s fastest network. We have been tracking and reporting on our network performance since 2021: you can see the latest update here. Building the fastest network requires work in many areas. We invest a lot of time in our hardware, to have efficient and fast machines. We […]
Code Mode: the better way to use MCP
It turns out we’ve all been using MCP wrong. Most agents today use MCP by directly exposing the “tools” to the LLM. We tried something different: Convert the MCP tools into a TypeScript API, and then ask an LLM to write code that calls that API. The results are striking: We found agents are able […]
Introducing new regional Internet traffic and Certificate Transparency insights on Cloudflare Radar
Since launching during Birthday Week in 2020, Radar has announced significant new capabilities and data sets during subsequent Birthday Weeks. We continue that tradition this year with a two-part launch, adding more dimensions to Radar’s ability to slice and dice the Internet. First, we’re adding regional traffic insights. Regional traffic insights bring a more localized […]
Announcing Cloudflare Email Service’s private beta
If you are building an application, you rely on email to communicate with your users. You validate their signup, notify them about events, and send them invoices through email. The service continues to find new purpose with agentic workflows and other AI-powered tools that rely on a simple email as an input or output. And […]
Choice: the path to AI sovereignty
Every government is laser-focused on the potential for national transformation by AI. Many view AI as an unparalleled opportunity to solve complex national challenges, drive economic growth, and improve the lives of their citizens. Others are concerned about the risks AI can bring to its society and economy. Some sit somewhere between these two perspectives. […]
