Meet Anza, the Engineering Company Behind Solana’s Biggest Upgrade Yet: Alpenglow

HIGHLIGHTS Anza develops core infrastructure for Solana, including its Agave validator client. Alpenglow went live on Solana on October 21, targeting transaction finality of around 150 milliseconds. Beyond Alpenglow, Anza is exploring network improvements through Rotor and post-quantum security research through Quantumglow. When one of the leading blockchains in Web3 rolls out one of its most significant upgrades, attention inevitably turns to the technology behind it.
While Solana’s Alpenglow upgrade is attracting attention for its ambition to bring transaction finality down to 150 milliseconds, the company responsible for building it has a story of its own.
Every Solana executive that announced Alpenglow thanked Anza and its team in their posts. Solana’s latest network upgrade has put Anza, one of the blockchain’s core engineering companies, in the spotlight.  But the company’s work extends well beyond Alpenglow and reveals a story of enginnering show. Heres how

Who has Built Solanas latest Upgrade Alpenglow?
Founded in January 2024, Anza emerged from Solana Labs with a focus on developing the software and protocols that underpin the Solana network.

Under CEO Brennan Watt, the company is continuing to expand its engineering roadmap. It handles projects spanning validator software, network performance and post-quantum security.

But Alpenglow, which went live on Solana’s mainnet-beta on October 21, 2026, represents its most visible milestone yet. The upgrade replaces TowerBFT, Solana’s previous consensus protocol. It aims to make transactions irreversible under the protocol in approximately 150 milliseconds.

For Anza, however, the launch is one stage in a longer effort to improve how Solana operates and what developers can build on top of it.

In an interview following Alpenglow’s launch, Watt described the significance of seeing the technology reach users after years of development.

“There is nothing like watching users actually touch the thing that you have been working on for so long,” Watt said. “We are an open-source software team, and that means that the only mode is execution. So we need to continue to evolve the system all the time.”

He added that he hoped Alpenglow’s activation would bring new applications on-chain that had previously been impractical or impossible.

Alpenglow is live on mainnet-beta ⛰️ 🎉

Solana’s new consensus protocol: finality reduced from 12.8 seconds to 150 milliseconds, built by Anza.

Why this is important 🧵 pic.twitter.com/uItGPrANdi

— Anza (@anza_xyz) October 21, 2026

Anza was established by a group of former Solana Labs executives and core engineers, including founding team members Jeff Washington, Stephen Akridge, Jed Halfon, Amber Christiansen, Pankaj Garg and Jon Cinque.

When the company was announced on January 30, 2024, its stated goal was to build a dedicated engineering organisation for the Solana ecosystem. Its formation also created a clearer separation between Anza’s future software contributions and the original validator code maintained by Solana Labs.

As per its official docs, One of its first major projects was Agave, a validator client forked from Solana Labs’ original software. Validators use such clients to process transactions, participate in consensus and maintain the blockchain’s state.

Anza’s work is not limited to validator infrastructure. The company also contributes to protocol research and developer tools, including software designed to help developers build applications on Solana.

However, the distinction between Anza and Solana itself is important. Anza develops open-source software, but it does not independently control the blockchain. Validators operate the network, and protocol changes require adoption and coordination across the wider ecosystem.

The company’s formation also fits into Solana’s broader effort to support multiple validator clients, including Jump Crypto’s Firedancer. Greater client diversity can reduce dependence on a single software implementation, although the benefits depend on adoption across the network.
Anza Announces Quantumglow
Alpenglow represents a major change to Solana’s consensus mechanism. Its design introduces Votor, a voting and finality system that uses cryptographic certificates to help validators reach agreement more quickly.

But Anza is already looking beyond the upgrade.

The company has outlined Rotor, a planned redesign of how block data propagates across Solana. The project is intended to replace the existing Turbine data-distribution mechanism and improve how information moves between validators.

Just a day after shipping Alpenglow, Anza announced Quantumglow. It is a research design intended to adapt Alpenglow for a future in which quantum computers could threaten existing cryptographic systems.

Quantumglow would use hash-based signatures in place of the elliptic-curve cryptography used in conventional blockchain systems. The objective is to explore post-quantum security while preserving Alpenglow’s fast-finality design.

Quantumglow remains a research effort rather than a deployed upgrade, and no confirmed release date has been announced. Rotor is also part of Anza’s continuing development roadmap but it highlights the efforts that it continues to make.

What would Solana’s consensus look like in a post-quantum world?

Meet Quantumglow: a proposed adaptation of Alpenglow that aims to protect consensus while preserving fast finality.@jacobvcreech and @qkniep explain how it works. Full video below👇 pic.twitter.com/G005a4KcSI

— Solana Developers (@solana_devs) October 22, 2026

Thus, with Alpenglow now live and further work on block propagation and post-quantum security in research or development, Anza’s story is no longer just about the upgrade that brought it into focus. It is about the engineering effort required to keep a major blockchain evolving.