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Case study · 2024–2026

Frédéric Matt

Bespoke commerce · SEO/GEO follow-up, 2024–2026

A specialist commerce platform built in 2024, extended in 2026 with useful technical resources and a public measurement trail. Delivery is verified; outcomes are followed over time.

Case study written and reviewed by Founder of Edikka · digital strategy, UX/UI, web development and SEO/GEO visibility.

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Project summary

A fully custom e-commerce website designed to showcase, configure and sell restored cast iron radiators.

Project reference figures Documented delivery and study Delivery checked directly in production on 18 September 2026.
Client
Frédéric Matt SARL
Year
2024 · 2026 extension
Sector
Cast iron radiators, restoration, interior design, specialized e-commerce
Mission
Custom e-commerce website, product catalogue, online purchasing, UX, framework-free development, SEO, technical architecture
Technologies
Custom PHP, MySQL, JavaScript, SCSS, semantic HTML
Website
View website

What changed in 2026

In September 2026, the existing commerce platform gained four decision guides, a technical reference, a redesigned cast-iron radiator page and discovery resources for search engines and AI systems. The complete delivery was checked in production on 18 September.

This proves delivery. Indexing, visibility, citations and enquiries are measured on the published site over time.

2026 extension

Turn specialist data into useful public resources

The 2026 work connects business knowledge, editorial context and verifiable publication.

Structure the source

For example, a power value is published per radiator section at ΔT 50, with its unit, calculation context and validation status.

Open the technical reference

Explain the decision

Four guides address choice, power, heat-pump compatibility and price with explicit limits.

View an example guide

Measure after publication

The D0 record proves what went online; the next waves observe indexing, SEO, AI visibility and enquiries separately.

See the D0 record

The platform built in 2024

The original project turned a complex catalogue of restored cast-iron radiators into a usable commerce journey. Product families, dimensions, finishes, availability, advice and delivery constraints had to remain understandable without flattening the craft.

Complex product

Make a technical, configurable product understandable

A restored cast-iron radiator combines dimensions, weight, compatibility, finish, availability and advice. The interface must help customers decide without stripping away the specialist detail.

  • Organise distinct product families without losing technical precision.
  • Keep advice and reassurance visible before a high-consideration purchase.
  • Connect catalogue, configuration recap and checkout in one journey.

Product logic

A configurator designed around the trade

The configurator recap makes model, finish, quantity and pricing readable before the customer saves the configuration or moves towards checkout.

  • Product parameters tied to a real customer decision.
  • Line-by-line prices, followed by totals before and after tax.
  • An explicit “Save this configuration” action before purchase.
Configurator recap showing one radiator, its finish, quantity, pre-tax and tax-inclusive totals, and a Save this configuration button

Visible journey

Three screens show the core system: orientation, configuration and checkout.

Home
Positioning Home

The craft and cast-iron radiator specialism are established immediately.

Configured radiators
Guided purchase Configured radiators

Ready-to-install products connect catalogue browsing with a concrete decision.

Basket
Checkout Basket

Product detail and reassurance remain visible at the point of purchase.

Google review for Edikka

What Frédéric Matt says about the project

A public review left after the website project. It highlights the understanding of a specialist business, the direct collaboration and the balance between design and functionality.

Google review · September 22, 2026 · translated from French

“The result feels like us, and that mattered to me.”

  • A complex catalogue and its customisation options presented clearly.
  • Direct exchanges on both the website’s design and functionality.
  • Ideas, explanations and guidance leading to a result true to the client.
Frédéric Matt
Read the full review Close the full review

I entrusted Bertrand, from Edikka, with the creation of our website, and I am very happy with the result. Our business—antique cast-iron radiators—is quite specialised, with many models and customisation options. Everything had to be presented clearly while showcasing our work and products. Bertrand understood very well what we were looking for.

I appreciated being able to speak with him directly about both the website’s design and how it works. He brings ideas, explains his choices and also knows how to guide us when what we had in mind is not the best solution.

The result feels like us, and that mattered to me. A big thank you, Bertrand, for your commitment and this beautiful work!

View the original review on Google

Documented transformation · 2024–2026

Frédéric Matt T0 D0

Delivery documented. Follow-up in progress.

The platform is online, the D0 delivery is verifiable and the outcome series starts after publication.

At the Frédéric Matt workshop, an operator handles a suspended cast-iron radiator.
Frédéric Matt workshop · The craft, before the metrics.Local inventory at T0. Power values are published at ΔT 50; source documents are not attached per reference.
Guides + technical reference published
4 + 1
Decision resources · 2026-09-18
HTML pages verified at D0
6
Title, H1 and JSON-LD · 2026-09-18
Open baseline dataset
DOI
Zenodo · CC BY 4.0 · 2026-09-18
See the D0 delivery Download the HTTP baseline JSON

Deployment milestone · D0

18 September 2026 — the new foundation is online.

Four guides, one technical reference, the redesigned cast-iron radiator page and three discovery resources were directly checked in production.

Delivered
Four expert guides, a technical reference, the redesigned cast-iron radiator page, sitemap, robots.txt and llms.txt.The complete delivery was publicly accessible.
Verified
Nine public resources returned HTTP 200; the six HTML pages exposed a title, an H1 and parseable JSON-LD.Desktop and mobile captures, response metadata and SHA-256 hashes were retained.
Measurement schedule
Indexing and Search Console stability at J+7 (25 September 2026); comparable SEO and AI observations at J+30 (18 October 2026).Primary comparison at J+90 (17 December 2026), then durable effect or seasonality at J+180 (17 March 2027).
Historical T0 and technical D0 — the T0 values remain unchanged
URLT0 · 13 Sep.D0 · 18 Sep.
/guides/choisir-radiateur-fonte 404 200
/guides/puissance-radiateur-fonte 404 200
/guides/radiateur-fonte-pompe-a-chaleur 404 200
/guides/prix-radiateur-fonte Not published 200
/llms.txt 404 200
/referentiel-radiateurs-fonte Not published 200
Download the D0 record JSON Download the D0 record CSV Method note and interpretation limits
T0
Historical snapshot from 13 September 2026.
D0
Technical delivery check from 18 September 2026.
T1
First comparable post-publication results wave.
J+n
Observation n days after publication.
Open the scientific appendixClose the scientific appendix
Fields, integrity and capture method · D0

Public HTTP GET with Cache-Control: no-cache and Pragma: no-cache. The cache-busting query parameter was removed from the canonical URLs recorded below.

The HTTP observations, timestamps, status codes, response metadata and hashes are licensed under CC BY 4.0. Page bodies, screenshots, photographs, source content, raw assistant answers and private data are excluded.

JSON · v0.1.0 · 7246 bytes
SHA-256 755573d580350c8268dc0ee3dfb41b1c6d2130cc6d1fc53f7ee5e0ab88f38be7

CSV · v0.1.0 · 3246 bytes
SHA-256 8b92495f61224c13cc1bb4c8c14323b5ab708d494c394f41a736c700a9ce985b

Read the baseline record · D0

Scientific appendix.

Historical baseline, protocol, downloads, versions and interpretation rules.

FM-T0-HTTP-0014 URLs returned HTTP 404 at T0.Production · Direct HTTP observation

194 sitemap URLs returned HTTP 200. Of the 5 additional URL checks, 4 returned 404; robots.txt returned 200.

Source
Archived public HTTP responses; row identifiers below.
Method
Public GET requests to exact URLs; response status, time and body hash retained. The five additional URL checks are listed below.
Limit
A publication snapshot, not an indexing, ranking or rendered-browser test. A missing llms.txt is not, by itself, a Google AI eligibility issue. Google Search Central.
All additional URL checks · historical status at T0
URL / observation IDHTTP
/guides/choisir-radiateur-fonteFM-T0-URL-002 · 404
/guides/puissance-radiateur-fonteFM-T0-URL-003 · 404
/guides/radiateur-fonte-pompe-a-chaleurFM-T0-URL-004 · 404
/llms.txtFM-T0-URL-005 · 404
/robots.txtFM-T0-URL-006 · 200
Read the baseline record JSON
FM-T0-DATA-001134 technical references to document.Local catalogue · Inventory

134 active references have a power value filled in, across 11 families in the local catalogue.

Source
Inventory of the local Frédéric Matt database.
Method
SQL count of active references with non-null, non-zero power values.
Limit
Frédéric Matt publishes these values per radiator section at ΔT 50 from internal technical sheets. Source documents are not attached per reference; technical families differ from commercial website categories and the catalogue is outside the HTTP dataset licence.
Read the baseline record JSON
FM-T0-GEO-001Three pivot queries: a reported finding.Initial audit · Reported finding

The initial audit reports an absence on three pivot queries. This is not a global AI visibility rate.

Source
GEO audit dated 13 September 2026.
Method
A finding reported by the initial audit, separate from the repeatable observation protocol to come.
Limit
The raw answers are not attached. This finding cannot currently be independently replayed from these files.
Read the baseline record JSON

Open observations · FM-HTTP-T0

A baseline you can reuse.

Frédéric Matt — public HTTP observations at T0

199 timestamped HTTP observations from the public Frédéric Matt website: 194 sitemap URLs and 5 additional URL checks. 195 responses returned 200 and 4 returned 404. One snapshot, not a performance trend.

Sitemap URLs
194
URL checks outside sitemap
5
Observations
199

The homepage with or without a trailing slash is counted once. The five additional URL checks are outside the sitemap; four exact tested paths returned 404 and robots.txt returned 200. These are not four broken links and do not prescribe future routes.

Download the HTTP baseline JSON Download the HTTP baseline CSV
CC BY 4.0

HTTP observations only. Attribution required; commercial reuse and adaptation permitted. Photographs, page content, the technical catalogue and private data are excluded.

Independent repository and DOI

DOI 10.5281/zenodo.22735575. The public Zenodo files were downloaded again and matched to these two SHA-256 hashes. The deposit preserves and identifies the files; it does not retrospectively certify the stated observation time or the truth of every row.

Suggested attribution

Edikka (2026). Frédéric Matt — HTTP observations, T0 (13 September 2026), v1.0.0 [Dataset]. Zenodo. https://doi.org/10.5281/zenodo.22735575. CC BY 4.0. Indicate any changes when reusing.

Fields, integrity and capture method

Each row contains an observation ID, URL, corpus, HTTP status, capture time and SHA-256 hash of the archived response. JSON and CSV contain the same observations in the same order.

The explanatory pages are available in French and English. Both languages describe the same HTTP dataset; the downloaded files retain English field names and metadata.

Capture interval (UTC) : → .

JSON · v1.0.0 · 62043 bytes
SHA-256 9682756c5120f2296a39e8960f9543053e56dc8fa46bd1134ffc3f0db5162c30

CSV · v1.0.0 · 35106 bytes
SHA-256 086b464c103c20490f0905a91eb23be3b0a4b57635f3cae1cdb4229b88efd836

A hash detects a changed file; it does not independently certify the truth of an observation. Raw page bodies remain archived privately and are not included in this licence.

Limits and interpretation rules

Delivery is verified. SEO, AI visibility and commercial effects are not established at D0.

The next measurement, specified in advance.

Protocol v0.3.0 · Documented after release; no comparable pre-release AI wave

Ten fixed questions, four assistant surfaces and two passes: 80 scheduled observations per wave. The first complete wave starts a post-publication series; it is not a retroactive baseline. Missing answers are not counted as absences.

Read the protocol
Question corpus and rules
Offline analysis code

Three contextual comparators selected

Decapfonte, Alphamétal and Radiastyl will be observed in the same answers as Frédéric Matt. On 13 September 2026, the agency owner confirmed that none is an Edikka client. This is an owner declaration, not an independent review. Panel selected; protocol not locked and no answers collected.

HTTP T0 remains unchanged and has its own Zenodo DOI. The protocol, analysis code, AI answers, catalogue and private metrics are not included in that deposit or licence. No DOI or independent timestamp is claimed for protocol v0.3.0.

Chronology and measurement rules

T0 is frozen and unchanged. D0 was recorded on 18 September 2026 after the public release: four exact probes moved from 404 to 200 and the new technical reference returned 200. D0 is a delivery milestone, not T1 visibility or commercial measurement.

No comparable repeatable AI wave was completed before the 18 September release. Post-publication AI observations therefore start a new series and cannot support a before/after attribution for this deployment. The three earlier pivot queries, without archived raw answers, remain contextual only.

Search Console comparisons use equal windows and page groups, separate brand from non-brand queries and report seasonality. No historical traffic or conversion baseline will be reconstructed as a gain.

Catalogue power values are published by Frédéric Matt per radiator section at ΔT 50 from internal technical sheets; the source document for each reference is not attached. Public pages are in scope; checkout, customer accounts and administration are excluded. Null, negative and missing results will be reported.

Version history

Page revision; historical T0 files unchanged : 2026-09-18-deployment-d0-final-v0.1.0.

Baseline v0.2.0 clarifies the corpus and links the reusable HTTP observations. This is a documentation correction, not a new measurement. The original v0.1.0 remains unchanged.

Original baseline · v0.1.0
Corrected baseline · v0.2.0

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