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Training Excel 2026 Add-ins - Developing Professional Extensions

Ref: ZRT117
10 people max.
From $1,470 HT / per person
Pay in 3 installments · On-site on request · +$540 with certification exam
1 day
Remote

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Learning objectives

  • Master the Office JS framework to create professional Excel 2026 Add-ins
  • Develop customized enterprise-optimized extensions
  • Implement advanced user interfaces with React in Excel
  • Design Add-ins connected to external APIs and databases
  • Deploy and debug certified Add-ins in secure production
  • Optimize Add-in performance for large data volumes

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.

Don't let this gap widen

Why this program matters

  • Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.

  • Organizations that don't train their talents on key topics see their competitiveness drop.

  • Every quarter without training is a gap widening with competitors who invest.

  • The cost of inaction quickly exceeds that of well-targeted training.

Allan BUSI
Allan BUSI

Learni trainer · AI expert

73%productivity gap
×3cost of inaction

Program

Module 1Excel 2026 Add-ins: Design, Code, and Deploy Advanced Extensions (Office JS, manifests, debugging)

Dive into Excel 2026 Add-ins development with Office JS, set up your Yeoman environment and generate a custom manifest for enterprise projects, code custom ribbons and interactive task panes in JavaScript/TypeScript, integrate React for smooth and reactive UIs on pivot tables, connect to REST APIs or SQL Server via secure asynchronous calls, perform practical exercises on a concrete automated dashboard case handling 100k rows, debug with F12 tools and Visual Studio Code, produce a deliverable Add-in deployed via Office Store sideload with security plan and performance optimization.

Evaluation method

  • Expert MCQ on Office JS and manifests at session end
  • Evaluation via development of a complete practical Add-in
  • Code review and presentation of the personalized red thread project

Learning method

  • Sessions led by an Add-ins expert with enterprise experience
  • Hands-on exercises on real automated data analysis cases
  • Red thread project: Immediately deployable Excel 2026 Add-in
  • Detailed course materials, templates, and source code provided

Methods, materials and delivery

The Training Excel 2026 Add-ins - Developing Professional Extensions 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 Excel 2026 Add-ins - Developing Professional Extensions 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 Excel 2026 Add-ins - Developing Professional Extensions 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.

Our method

Training quality, guaranteed at every step

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.

Step 1

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.
Step 2

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.
Step 3

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.
Step 4

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.

FAQ

Frequently asked questions

How much does the Training Excel 2026 Add-ins - Developing Professional Extensions training cost?+
The individual price is $1,470 (USD). A detailed quote is sent within one business day.
How long is the Training Excel 2026 Add-ins - Developing Professional Extensions training?+
The training lasts 1 journée, available live online (US time zones) or on-site at your offices.
How is this training paid for?+
Most US teams pay directly through their company (L&D or training budget). We invoice in US dollars and accept bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
Are there any prerequisites?+
Expert mastery of VBA, JavaScript ES6+, and Excel 365 with Office API
Is a certificate delivered at the end?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report.
Does Learni provide the equipment?+
No. A computer and stable internet connection are required for the participant. Learni provides the educational platform, the trainer and all course materials.
On-site & remote

This training across cities

Available on-site and remotely. Pick your city to see the local training center.

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