Building a certificate authority for the whole Internet

Twelve years ago, during Birthday Week 2014, we turned on Universal SSL and nearly doubled the number of encrypted sites on the web overnight, giving free TLS to every site behind Cloudflare, including the ones that never paid us a cent. Encryption stopped being an expensive, time-intensive undertaking and instead became the default.

For Birthday Week this year, we are taking the next step on that path. For more than a decade we have been one of the largest consumers of publicly trusted certificates on the Internet, and have never issued a single one ourselves. That is changing. Cloudflare is announcing our intent to become a public certificate authority (CA).

Today we are announcing the first concrete milestones in that effort: We have applied for inclusion in the Chrome, Apple, Microsoft, and Mozilla root programs, and we have signed a definitive agreement to acquire an established, broadly trusted root from GlobalSign, so that we can offer certificates with the widest possible device reach the day we begin issuing. We’re also announcing our plans to be one of the first CAs to serve post-quantum certificates, targeting Chrome’s recently announced Quantum-resistant Root Program.

We are not issuing certificates yet, and it will be Continue reading

How Cloudflare uses the world’s greatest collection of performance data to make the world’s fastest global network even faster

Cloudflare operates the fastest network on the planet. We’ve shared an update today about how we are overhauling the software technology that accelerates every server in our fleet, improving speed globally.

That is not where the work stops, though. To improve speed even further, we have to also make sure that our network swiftly handles the Internet-scale congestion that hits it every day, routing traffic to our now-faster servers.

We have invested in congestion control for years. Today, we are excited to share how we are applying a superpower of our network, our massive Free Plan user base, to optimize performance and find the best way to route traffic across our network for all our customers globally.

Early results have seen performance increases that average 10% faster than the prior baseline. We achieved this by applying different algorithmic methods to improve performance based on the data we observe about the Internet each day. We are excited to begin rolling out these improvements to all customers.

The Internet is a massive collection of interconnected networks, each composed of many machines (“nodes”). Data is transmitted by breaking it up into small packets, and passing them Continue reading