Showcase websites & e-commerce
Fast, search-optimised websites that are easy to evolve, for tradespeople, shops and SMEs.
Web & AI agency · Lyon · Auvergne-Rhône-Alpes
Web design and digital tools in Lyon. Built by the KAYZEN team.
KAYZEN is a French team based in Lyon that builds websites for businesses and develops its own applications. Practical tools for everyday digital needs, free to use depending on availability.
- Free 30-minute consultation
- Delivery in 2 to 10 weeks depending on the package
- 40 documented projects
SEO score 99/100
Google Lighthouse
28 — Sites scoring 100/100 for SEO (out of 32 measured projects (Lighthouse))
40 — Published projects (each with its own case study)
99/100 — Lighthouse SEO score (average across 32 measured projects)
30 min — Free consultation (no commitment)
New KAYZEN tool
Nexus — The SEO platform for the AI era
Classic SEO + GEO + AEO + LLMO. Be visible on Google, ChatGPT, Perplexity and Claude before your competitors. Up and running in 10 minutes.
Discover Nexus (opens in a new tab)Free to start · Results in 10 min
The KAYZEN showroom
Our applications, ready to use
Ten tools designed and published in Lyon: legal research, AI news, cybersecurity, compliance and SEO. Open them and try them out: most are free.
10 applications shown
JURIS LIMEN
LegalFree during the beta
French law at the source: case law, codes as they stood on the date of the facts, open-access legal scholarship and citations checked against Légifrance and Judilibre, with an MCP server for your AI agent.
Start a legal search(opens in a new tab)
KAYZEN AI Radar
AI & newsThe KAYZEN AI blog
KAYZEN's French-language AI news outlet: models, agents, MCP and open source, with official sources cited and written for SME leaders.
Read the latest articles(opens in a new tab)
Kayzen Security
CybersecurityPilot programme
DNS filtering, patches, antivirus and compliance reports combined in a single agent and a single console. Free for life for individuals.
Join the pilot programme(opens in a new tab)
Sésame
CybersecurityFree · open source
An end-to-end encrypted password vault, open source and free, with syncing and family sharing.
Secure my passwords(opens in a new tab)
Sésame Éclair
CybersecurityFree · no account
Share a password or API key through a one-time link, encrypted in your browser. Completely free, no account needed.
Create a secret link(opens in a new tab)
Konsent
ComplianceOpen audit
Check which trackers are set before consent, who receives the data and which references apply.
Run a free audit(opens in a new tab)
Konforme
ComplianceRGAA audit
Assess your website's accessibility with RGAA and WCAG checks, explanations and suggested fixes.
Discover Konforme(opens in a new tab)
Sentinel
CybersecurityAutonomous pentest
Security agents actually test your application and document exploitable vulnerabilities with replayable evidence.
Discover autonomous pentesting(opens in a new tab)
Nexus
SEOFree SEO audit
Get a free audit of your technical SEO, your content and your visibility in AI search engine answers.
Audit my website for free(opens in a new tab)
Kayzen VPN
CybersecurityComing soon
A VPN built in Lyon, with published trust criteria and a free tier planned at launch.
Follow the launch(opens in a new tab)
In brief — What KAYZEN builds in Lyon
- A French team based in Lyon's 9th arrondissement: KAYZEN builds websites and develops its own digital tools.
- Average Lighthouse SEO score of 99/100 across 32 measured projects, 28 of them at 100/100.
- Average accessibility score of 96/100 — the European Accessibility Act has applied since June 2025.
- Going live is included in every package: set-up with the hosting provider of your choice, SSL certificate and backups.
- 40 documented projects in Lyon, Villeurbanne and across Auvergne-Rhône-Alpes, each with its own case study.
- Free quote within 24 hours, delivery in 2 to 10 weeks depending on the package.
- AI & automation solutions: AI agents, chatbots, MCP applications and process automation — for SMEs and software publishers, delivered 100% remotely.
KAYZEN — premium web agency in Lyon
KAYZEN is a website design agency based in Lyon's 9th arrondissement, specialising in web and artificial intelligence solutions for small businesses and SMEs in Auvergne-Rhône-Alpes. Founded in 2023, the agency builds showcase websites, online shops, business applications and AI solutions (agents, automation, MCP protocol), combining careful design, advanced SEO and an included launch (set-up with the hosting provider of your choice, SSL certificate, backups).
| Indicator | Value |
|---|---|
| Location | 6 Rue de Bourgogne, 69009 Lyon |
| Lighthouse SEO score | 99/100 (average across 32 measured projects) |
| Lighthouse accessibility | 96/100 (average) |
| Going live | Included in every package: set-up with the hosting provider of your choice, SSL certificate, backups |
| Technologies | React 19, TypeScript, Tailwind CSS, Vite, Gemini API, MCP |
| Service area | Lyon, Rhône (69), Auvergne-Rhône-Alpes |
| Showcase website pricing | From €1,599 (net prices, VAT not applicable) |
| Contact | contact@kayzen-lyon.fr · +33 4 87 77 68 61 |
What is our core expertise in Lyon?
Four pillars for a fully digital business: your website, your visibility, your processes.
Web agency Lyon • Rhône-Alpes
What services does a web & AI agency offer in Lyon?
From designing your responsive website to AI-powered automation of your processes, our expertise covers the entire digital value chain for businesses in the Auvergne-Rhône-Alpes region.
Far more than a web agency
Websites, apps, software: what KAYZEN builds
KAYZEN does not just deliver websites. We also build mobile apps, Windows and macOS software, browser extensions and SaaS platforms — and we publish our own products, used every day.
Our expertise, with proof
Websites with advanced features
Interactive maps, calculations, real-time data, 3D: when the website becomes a tool.
SaaS platforms
Subscription-based online software, with accounts, dashboards and APIs.
Mobile apps
Android and iOS apps that share the same code as your web version.
Examples:
Windows & macOS software
Installable, secure desktop applications, ready for the Microsoft Store.
Examples:
Browser extensions
Chrome, Edge and Firefox extensions that bring your service to where your customers work.
Examples:
AI & automation
AI agents, visibility analysis in answer engines and automated business tools.
Security & compliance
GDPR audits, RGAA accessibility, penetration testing: tools that measure rather than claim.
A project that fits no box?
Website, app, software or internal tool: describe your needs and we will reply within 24 hours.
Free diagnostics — offer valid until 31/12/2026
Eight free audits to find out where your website really stands
Each audit results in a written, quantified and prioritised diagnosis, delivered within 72 working hours. No obligation: the action plan is yours, and you are free to apply it with us or not.
These audit pages are written in French.
Before you redo your website, check these 100 points.
A practical checklist in 10 themes: scoping, current state, content, user journeys, accessibility, mobile, SEO, trust and compliance, technical, migration and launch. Tick off what you have covered, spot the topics to address and prepare your project, with no jargon and no email address.
The PDF guide is written in French.
A Lyon web team that also develops its own digital tools
A web agency is a company that specialises in designing, developing and optimising websites for search engines. It supports small businesses and SMEs through their digital transformation, from building the website to winning customers online.
For a small business or SME, the website is the first point of contact for a customer looking for a provider on Google — before the phone call, before the visit. It is also the only channel the business fully owns, unlike a profile on a third-party platform.
KAYZEN is a French team based in Lyon's 9th arrondissement. We help businesses with website design and also build our own applications: digital tools developed in-house to meet real needs, with a commitment to making them more accessible.
Learn more about our services and pricing
How do you build a professional website in Lyon?
Building a professional website follows our three-step method:
- Audit & Strategy — analysis of your market, your competitors, target keywords and the purpose of the site.
- Bespoke design — mock-ups approved before any code, copy and accessibility checked, then development in React 19 and TypeScript.
- Launch & Growth — going live, Google indexing, performance tracking and continuous optimisation.
What performance should you expect from a website in 2026?
According to the Lighthouse reports published in our 32 measured case studies, websites built by KAYZEN achieve the following averages:
- SEO: 99/100 — with 28 projects at exactly 100/100.
- Accessibility: 96/100 — 21 projects at 95/100 or above.
- Best practices: 98/100.
- Performance: 85/100 — our area with the most room for improvement, and every low score is explained on the page of the project concerned.
Web agency vs freelancer: what's the difference?
Choosing between a web agency and a freelancer depends on your budget and the complexity of your project. Here is a comparison:
| Criterion | Web agency | Freelancer |
|---|---|---|
| Single point of contact | Backed by specialist partners (design, development, SEO, marketing) | Often a single skill set |
| Long-term availability | A stable contact and a documented project | Risk of unavailability |
| Performance tracking | Launch report included (Craft, Legacy); monthly with maintenance | Rarely offered |
| Average price of a showcase site | From €1,599 | €500–3,000 |
| Delivery time | 2 to 10 weeks depending on the package | 2 to 8 weeks |
| Warranty & maintenance | Optional maintenance (included for 1 year in Legacy) | Varies |
What is search engine optimisation (SEO)?
Search engine optimisation (SEO) covers all the techniques used to improve a website's position in Google's search results. It includes technical optimisation, high-quality content and earning inbound links (backlinks).
It is the most durable acquisition channel: a well-built website keeps attracting visitors without advertising spend, whereas a campaign stops when its budget runs out.
Our SEO agency expertise covers technical SEO audits, on-page optimisation, content strategy and local SEO through Google Business Profile.
What is an AI agent, and what is the MCP protocol?
An AI agent is a program that can carry out tasks autonomously: answering customers, qualifying enquiries, generating documents or orchestrating business tools. The MCP protocol (Model Context Protocol) is the open standard that connects an AI such as Claude or ChatGPT to your tools: CRM, calendar, invoicing, databases.
KAYZEN builds bespoke MCP applications: AI agent integration, tool orchestration, multi-agent systems, APIs and automation — a service delivered 100% remotely, for clients anywhere in France.
Why is digital marketing essential in 2026?
Digital marketing covers all promotional activity carried out on digital channels: search engines, social media, email and online advertising.
Customers search, compare and read reviews before they call; online advertising puts your offer in front of them at exactly that moment, with a budget you control and results you can measure campaign by campaign.
We support our clients with digital marketing: Google Ads (paid search) campaigns, social media management, targeted email marketing and automation powered by artificial intelligence.
What concrete results for businesses in Lyon?
We only publish what we measure. Here is what our 40 case studies show:
- A Lighthouse SEO score of 100/100 on 28 of the 32 measured projects, and never below 92.
- Accessibility: 21 projects at 95/100 or above — the European Accessibility Act has applied since June 2025.
- Performance: 85/100 on average — every low score is explained on the project page, along with its cause.
- Going live is included in every package, with the hosting provider of your choice, plus SSL certificate and backups.
How much does a professional website cost in Lyon in 2026?
| Package | Price | Included |
|---|---|---|
| Pack Core | €1,599 | 10 pages, core SEO, launch included |
| Pack Craft | €2,499 | Up to 25 pages, advanced SEO, Google Business |
| Pack Legacy | €3,999 | E-commerce, AI chatbot, CRM, 1 year of maintenance |
Source: KAYZEN price list, September 2026. Net prices — VAT not applicable, Article 293 B of the French CGI (tax code). Payment in three interest-free instalments; any public funding you may be eligible for is checked at the first meeting.
See our full pricing or explore our 17 services for small businesses and SMEs in Lyon. You can also explore our online shop design offer and public funding: we check which schemes you can claim.
Where does KAYZEN work in the Lyon area?
Our web agency works throughout Greater Lyon and beyond. Discover our website design services in your town:
- Web agency in Lyon — our base in Lyon's 9th arrondissement, at the heart of the metropolitan area.
- Website design in Villeurbanne — small businesses and SMEs in north-east Lyon.
- Website design in Bron — businesses in east Lyon.
- Website design in Vénissieux — the south-east of the metropolitan area.
- Website design in Caluire-et-Cuire — on the Rhône's right bank, ten minutes away.
- Website design in Tassin-la-Demi-Lune — the gateway to western Lyon.
- Website design in Écully — businesses and campuses in the west.
- Website design in Oullins — south of Lyon and the Yzeron valley.
- Website design in Saint-Priest — technology park and eastern Lyon.
Ready to launch your project?
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Performance & Results
Why choose KAYZEN for your digital project in Lyon?
KAYZEN is a web agency in Lyon that publishes its results. Every project shows its Lighthouse reports: the averages below can be checked in two clicks from the portfolio.
40 — Published projects
each with its own case study
99/100 — Lighthouse SEO score
average across 32 measured projects
96/100 — Accessibility
21 projects at 95 or above
28 — Sites scoring 100/100 for SEO
out of 32 measured projects
React
Next.js
TypeScript
Tailwind
Node.js
Supabase
Premium Website Design
How does building a website work?
Building a website follows a three-phase process. A small business or SME in Lyon deserves a clear, transparent methodology.
Step 1
Audit & Strategy
We analyse your market in Lyon and beyond to chart the best path for your digital growth.
Step 2
Bespoke Design
No off-the-shelf templates. A unique design that reflects who you are and turns visitors into customers.
Step 3
Launch & Growth
We put your site live with the hosting provider of your choice, with SSL certificate and backups, then track your SEO performance and keep optimising.
Public funding in Auvergne-Rhône-Alpes
Public funding: we check your eligibility
Schemes change every year and many promises found online are out of date. Here is what really exists in 2026 for small businesses and SMEs in Lyon and the wider region, and how we check it for you.
Atouts Numériques
Auvergne-Rhône-Alpes RegionDiagnostic and support 100% funded (Region + ERDF) for small businesses and SMEs with fewer than 50 employees. The scheme pays for advice, not for building the website.
France Num
French government initiativeThe French state's official portal: around 200 national and regional schemes listed by area. France Num informs and points you in the right direction; it does not pay grants directly.
Local funding
CCI, CMA, local authoritiesOne-off digitalisation grants exist depending on your municipality and your chamber of commerce or trades. We check which ones apply to you before any quote.
KAYZEN support
Our commitmentWe identify the funding your business is eligible for and help you put together your application.
Frequently Asked Questions
Everything you need to know about website design in Lyon
Answers to the questions businesses in Lyon ask before launching their web project.
The price depends on the complexity of the project. A professional showcase website starts at €1,599 (Core package), while a bespoke e-commerce site starts at €3,999 (Legacy package) and is then quoted individually. Net prices — VAT not applicable, Article 293 B of the French CGI (tax code). KAYZEN provides free, tailored quotes within 24 hours for small businesses and SMEs in Lyon and across the Auvergne-Rhône-Alpes region.
A Lyon-based web agency such as KAYZEN offers a single point of contact backed by specialist partners (design, development, SEO, marketing), long-term availability and in-depth knowledge of the local business landscape. We support businesses in Lyon, Villeurbanne and throughout Auvergne-Rhône-Alpes with a dedicated contact and ongoing performance tracking.
A Core showcase website is delivered in 2 to 4 weeks, a Craft package in 4 to 6 weeks and a Legacy project (e-commerce, customer area, business tools) in 6 to 10 weeks. We work in an agile way with regular checkpoints to deliver a result that meets your expectations and is optimised for Google's Core Web Vitals.
Every website built by KAYZEN includes full on-page SEO: semantic markup (H1, H2, H3), Schema.org structured data, Core Web Vitals performance, responsive design and Google Search Console setup. We also offer advanced SEO services to strengthen your visibility on Google in Lyon.
Website redesign is one of our core services. We audit your current site (design, performance, SEO), identify areas for improvement and design a new version that respects your identity while maximising conversions and search engine visibility.
Less than people claim — and these schemes only apply to businesses established in France. In 2026, small businesses and SMEs in Auvergne-Rhône-Alpes with fewer than 50 employees can get a diagnostic and support fully funded (Atouts Numériques, a programme run by the Region with ERDF/FEDER funding); SMEs with 10 or more employees can get co-funding for an AI diagnostic (IA Booster France 2030, until 31 December 2026); and some local authorities or chambers of commerce offer variable local grants. Details of the schemes that actually exist — and of those that no longer do — are kept up to date on our funding page (/aides). We check your eligibility before any quote, because funding must always be applied for before work begins.
Core Web Vitals are a set of metrics defined by Google to measure a website's user experience: LCP (loading speed), INP (responsiveness) and CLS (visual stability). A good score directly improves your Google ranking. Across the 32 projects for which we publish Lighthouse reports, the average is 99/100 for SEO, 96/100 for accessibility and 85/100 for performance — every score can be checked on the page of the project concerned.
Every site includes an SSL certificate, a compliant cookie policy, spam protection on forms and regular backups. We apply GDPR best practice: informed consent, data minimisation and encrypted communications.
SEO (search engine optimisation) aims for lasting positions in Google's organic results, without paying per click. SEA (search engine advertising) refers to paid Google Ads. We recommend a combined strategy: SEA for immediate results and SEO for sustainable growth.
Yes. We offer annual maintenance contracts covering security updates, daily backups, performance monitoring and priority technical support. We also provide monthly SEO follow-up with detailed reporting to keep improving your visibility.
Yes. KAYZEN builds applications based on the MCP protocol (Model Context Protocol): AI agents connected to your business tools (CRM, calendar, invoicing), multi-agent systems, APIs and bespoke automation. These services are delivered 100% remotely, for clients throughout France. Get in touch for a free assessment of your use cases.
The most common cases: qualifying and responding to incoming enquiries, booking appointments, generating quotes and documents, customer follow-ups, monitoring and reporting. Together we identify high-volume repetitive tasks, then build the right agent or automation — with measurable ROI from the very first weeks.