Of the Field

WASM I/O 2026

ASM I/O is a two-day single-track conference focused on the WebAssembly ecosystem, bringing together the global WebAssembly community for deep technical sessions, discussion, and networking. The 2026 edition will be held in Barcelona, providing an opportunity to collaborate, share knowledge, and shape the future of WebAssembly.

Visit the official site Register

36Voices

0Underwriters

0Exhibitors

29On the bill · sessions

26Companies · in total

§I

The Voices

Programmed at WASM, in alphabetical order.

Andrea Peruffo

IBM

Andrew Steurer

Bailey Hayes

Cosmonic

Barış Güler

Zoi

Bruce Gain

ReveCom

Corey Ryan

fastertools

Dan Phillips

Doru Blânzeanu

Microsoft

Edoardo Vacchi

Red Hat

Erik Rose

Fastly

Fedor Smirnov

Peeriot

Fellyph Cintra

Automattic

Guy Bedford

Cloudflare

Ian McDonald

Extend

Kevin Burns

Pantopic

Kit Chan

Yahoo

Kohei Tokunaga

NTT, Inc

Lucy Menon

Microsoft

Luke Wagner

Fastly

Marcin Ziółkowski

Orange Innovation Poland

Max Desiatov

Apple

Michael Yuan

Second State

— and 14 more, by name unsung —

§III

The Programme

Selected from 29 sessions on the bill.

19th March, 09:00 - 09:15
Opening
Track 1 (Auditorium)
19th March, 09:15 - 09:45
Towards a Component Model 1.0
Track 1 (Auditorium)
19th March, 09:50 - 10:20
Beyond Performance: 5 Years of Improving JavaScript on WebAssembly
Track 1 (Auditorium)
19th March, 10:25 - 10:55
The Exacting Details of "Hello, World!" in Wasmtime
Track 1 (Auditorium)
19th March, 11:25 - 11:55
Hands-On with Hyperlight and Wasm [Workshop]
Track 2 (Workshops)
19th March, 11:25 - 11:55
Running Python Greenlets fully in WebAssembly thanks to JSPI
Track 1 (Auditorium)
19th March, 12:00 - 12:30
Rust & JavaScript Interoperability @ Cloudflare
Track 1 (Auditorium)
19th March, 12:35 - 13:05
Co-operative Multithreading and the Component Model
Track 1 (Auditorium)
19th March, 14:05 - 14:35
Building Browser-Native AI Runtimes: A Hands-On Workshop with WebLLM, WASM & WebWorkers [Workshop]
Track 2 (Workshops)

Intermission

Part the Second · For the Buyer

An audience of 26 companies, parsed from the program.

“26 companies in attendance.”

The numbers below are derived from the speakers, sponsors, and exhibitors on this page — cross-referenced into one ledger. They are the only thing here that 10times.com cannot tell you.

№ 01Fig. 01 — Composition of the House

0All threespeak · spons · exh

0Sponsoringsponsor only

0Exhibitingexhibitor only

26Speakingspeaker only

№ 02Fig. 02 — The Voices, by Seniority

Other roles36100%

Of 36 on the bill · classified by free-text title

№ 03Fig. 03 — The Heaviest in the Room

01Microsoft4V
02Fastly3V
03F52V
04Mimic2V
05Akamai1V
06Apple1V
07Automattic1V
08Cloudflare1V
09Cosmonic1V
10Extend1V
11fastertools1V
12Goodnotes1V
13IBM1V
14Igalia1V

№ 04Fig. 04 — By Tier

Tiers were not disclosed for this convocation.

WASM I/O 2026

Opening

Towards a Component Model 1.0

Beyond Performance: 5 Years of Improving JavaScript on WebAssembly

The Exacting Details of "Hello, World!" in Wasmtime

Hands-On with Hyperlight and Wasm [Workshop]

Running Python Greenlets fully in WebAssembly thanks to JSPI

Rust & JavaScript Interoperability @ Cloudflare

Co-operative Multithreading and the Component Model

Building Browser-Native AI Runtimes: A Hands-On Workshop with WebLLM, WASM & WebWorkers [Workshop]

“26 companies in attendance.”