Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Training WASI - Developing Portable WebAssembly Apps
Trusted by — schools, companies and industrial groups
40,869 programs · 25 countries
Every program built with a dedicated engineer
Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.
WASI training objectives
- Master WASI interfaces to create professional and portable WebAssembly modules
- Develop secure applications with system access via WASI in certified training
- Implement file and network I/O in multi-platform Wasm environments
- Optimize WASI performance for scalable enterprise deployments
- Integrate WASI into CI/CD pipelines for smooth production workflows
- Design reusable components to enhance secure development skills
Program
WASI curriculum: 3 modules over 3 days
Module 1 : WASI Fundamentals: Installation and First Modules (Wasmtime, wasm-pack, Rust)
Dive into the WASI universe from the first day by installing Wasmtime and wasm-pack to create your first compatible WebAssembly module. Explore previews 1 and 2 of the system interface with practical exercises on WIT interface contracts. Implement basic functions like command-line arguments and environment variables. Test in real-time on real business cases such as portable CLI scripts. Produce a functional deliverable with code review by the trainer to consolidate your professional skills.
Module 2 : Advanced WASI: I/O and Network Management (Files, Sockets, HTTP via wit-bindgen)
Advance to the next level with secure file and directory handling via WASI. Integrate data streams in Rust or C for robust applications. Configure TCP/UDP sockets and HTTP requests without browser dependencies. Apply these skills to a red thread project like a lightweight portable server. Generate automatic bindings with wit-bindgen. Perform unit and integration tests to validate multi-OS portability. Conclude with a security audit demonstrating immediate value for your enterprise projects.
Module 3 : WASI Deployment: Optimization and Production Integration (CI/CD, Containers, Monitoring)
Finalize your mastery by optimizing WASI modules for production using AOT and JIT compilation techniques via Wasmtime. Integrate into GitHub Actions or Jenkins pipelines for automated deployments. Containerize with Docker for edge computing scalability. Monitor performance and errors with Wasm-adapted tools like Prometheus. Apply to a real enterprise case like an OS-less microservice. Produce a deployment-ready bundle with full documentation, and receive expert feedback to directly boost your certifiable skills.
How WASI skills are assessed
- Multiple-choice quiz to validate acquired knowledge at the end of the training
- Continuous evaluation through practical WASI exercises
- Defense of the red thread project in front of the trainer
How the WASI course is taught
- Courses led by a WebAssembly expert trainer
- Practical exercises based on real business cases
- Progressive red thread project throughout the training
- Complete course materials provided to each participant
WASI training: access and practical arrangements
The Training WASI - Developing Portable WebAssembly Apps program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Training WASI - Developing Portable WebAssembly Apps program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training WASI - Developing Portable WebAssembly Apps program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
The Learni story
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
Our method
How Learni guarantees the quality of your WASI training
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
Our social commitment
A school kit donated to a child for every training booked
To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
- Backpack, notebooks and essential supplies
- Distributed through our partner charities
- Included, at no extra cost to you
FAQ
WASI: frequently asked questions
Which tools are used in WASI training?+
Hands-on work runs on wasmtime, wasm-pack, rust, files, sockets and HTTP via wit-bindgen. Those tools come from the WASI program itself, delivered on site over 3 days, so participants practise on the stack they will use at work.
What can participants do after WASI training?+
They can master WASI interfaces to create professional and portable WebAssembly modules, develop secure applications with system access via WASI in certified training and implement file and network I/O in multi-platform Wasm environments. Those are the stated objectives of the WASI program at Intermediate level, checked by the end-of-session assessment.
What does the WASI program cover, day by day?+
Day 1: WASI Fundamentals: Installation and First Modules (Wasmtime, wasm-pack, Rust). Day 2: Advanced WASI: I/O and Network Management (Files, Sockets, HTTP via wit-bindgen). Day 3: WASI Deployment: Optimization and Production Integration (CI/CD, Containers, Monitoring). The WASI program runs over 3 days, delivered on site.
How is WASI training assessed?+
Assessment relies on multiple-choice quiz to validate acquired knowledge at the end of the training, continuous evaluation through practical WASI exercises and defense of the red thread project in front of the trainer. Learni issues a completion certificate together with the individual assessment report at the end of the WASI program, which an L&D team can file as evidence.
How much does WASI training cost per participant?+
WASI training costs $3,465 per participant. For an in-company team, the flat rate starts at $6,290 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does WASI training take?+
3 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for WASI training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before WASI training?+
Knowledge of WebAssembly, Rust or C, and operating system basics.
Is a certificate issued after WASI training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for WASI training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
Your professional training, anywhere
Let's build your WASI learning path.
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