It’s been eight years since Google first announced the technology to replace the internet’s seminal TCP standard.

One of the internet’s foundations just got an upgrade. Quic, a protocol for transmitting data between computers, improves speed and security on the internet and can replace Transmission Control Protocol, or TCP, a standard that dates back to Ye Olde Internet of 1974.

Earlier this week, the Internet Engineering Task Force, which sets many standards for the global network, published Quic as a standard. Web browsers and online services have been testing the technology for years, but the IETF’s imprimatur is a sign the standard is mature enough to embrace fully.

It’s extremely hard to improve the internet at the fundamental level of data transmission. Countless devices, programs and services are built to use the earlier infrastructure, which has lasted decades. Quic has been in public development for nearly eight years since Google first announced Quic in 2013 as an experimental addition to its Chrome browser.

But upgrades to the internet’s foundations are crucial to keep the world-spanning communication and commerce backbone humming. That’s why engineers spend so much effort on titanic transitions like Quic, HTTPS for secure website communications, post-quantum cryptography to protect data from future quantum computers, and IPv6 for accommodating vastly more devices on the internet. Jana Iyengar, an engineer who helped lead Quic standardization at internet infrastructure company Fastly, said in a blog post:

“The internet transport ecosystem has been ossified for decades now. Quic is poised to lead the charge on the next generation of internet innovations.”

In a 2017 research paper on Quic, Google said its in-house version of the technology cut the wait for web search results by 8% on PCs and 4% on phones. The time that people wasted on  YouTube buffering dropped 18% for PC users and 15% for mobile users.

Transmission Control Protocol governs how data is sent from one computing device to another across the internet. TCP and Quic work in conjunction with another seminal standard, IP, short for Internet Protocol. TCP controls how data is broken up into packets that are individually addressed, sent across the internet’s routing infrastructure and then reassembled at the other end of the connection.

It’s TCP’s job to make the internet resilient enough to withstand nuclear attacks. Among other things, TCP handles how connections are established and how to recover data packets that are lost in transmission.

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