{"product_id":"concevoir-un-site-ou-une-application-formation","title":"Designing a website or application — training","description":"\u003cp\u003e\u003cstrong\u003eFrom idea to production, without building what no one will use.\u003c\/strong\u003e Eight modules. Each ends with a deliverable that you produce yourself — training is useless if you just read it.\u003c\/p\u003e\n\n\u003cp\u003eIt covers the design, construction, and deployment methodology. It does not teach a language: the principles remain valid whether you write the code, hire someone, or assemble no-code tools.\u003c\/p\u003e\n\n\u003ch3\u003eThe eight modules\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. Decide what to build\u003c\/strong\u003e — The problem statement that sorts good ideas from bad, with a weak example and a usable example. Why your real competitor is a spreadsheet. The replacement rule: why 20% improvement never replaces anything. The three-pass cutting method, and the \"not now\" list.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Investigate without deceiving yourself\u003c\/strong\u003e — The four rules of a useful interview. \u003cstrong\u003eA complete 35-minute interview guide\u003c\/strong\u003e, ready to use. A reading grid for responses: what is a signal, what is nothing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Design before building\u003c\/strong\u003e — Write user flows in text, including the line everyone forgets. Reduce the path to the first useful result. \u003cstrong\u003eThe seven states of each screen\u003c\/strong\u003e — empty, loading, nominal, error, partial, too much data, offline. Write useful error messages, with a before\/after table.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. The data model\u003c\/strong\u003e — The six questions before fixing a schema: uniqueness, historization, deletion, permissions, units and time zones, growth. Why a referenced price instead of a copied one changes the amount of your old orders. The four tables everyone forgets. Two-step migrations, without service interruption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Choose your technique\u003c\/strong\u003e — The only true criterion. No-code, with code, or in between, with the limits of each. The six building blocks you never write yourself. Six questions to evaluate a third-party service you will depend on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Build\u003c\/strong\u003e — Deliver in vertical slices. The right quality, at the right time. Diminishing returns testing. \u003cstrong\u003eTen non-negotiable security points\u003c\/strong\u003e, from access control on guessable identifiers to rate limiting. Backups, and the two numbers that determine your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. Deploy\u003c\/strong\u003e — Accessibility in ten points, with WCAG AA thresholds. The three performance indicators and their thresholds, with the five levers by yield. Minimal observability. \u003cstrong\u003eA 24-point launch checklist\u003c\/strong\u003e in five blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. Maintain, and know when to stop\u003c\/strong\u003e — Three indicators, not thirty, plus cohort retention. Translate user requests into real needs, with a correspondence table. Manage technical debt with its triggers. Handle an incident in five steps. The written criterion that will tell you whether to continue or stop.\u003c\/p\u003e\n\n\u003ch3\u003eWhat you take away\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eEight concrete deliverables, one per module\u003c\/li\u003e\n\n\u003cli\u003eA complete user interview guide\u003c\/li\u003e\n\n\u003cli\u003eThe seven screen states grid\u003c\/li\u003e\n\n\u003cli\u003eThe ten-point security checklist\u003c\/li\u003e\n\n\u003cli\u003eThe 24-point launch checklist\u003c\/li\u003e\n\n\u003cli\u003eA review grid before each production release\u003c\/li\u003e\n\n\u003cli\u003eThe list of the ten most costly errors\u003c\/li\u003e\n\n\u003cli\u003eA glossary of 10 terms\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eFor whom\u003c\/h3\u003e\n\u003cp\u003eFreelancers and small teams launching a digital product, project managers who will oversee a service provider, developers who know how to build but not what to build.\u003c\/p\u003e\n\n\u003ch3\u003eFor whom it is not\u003c\/h3\u003e\n\u003cp\u003eThose looking to learn programming: the training assumes that construction is resolved, one way or another. Nor for teams already operating large-scale systems.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the training does not cover\u003c\/h3\u003e\n\u003cp\u003eLearning a language, natural referencing (SEO), paid advertising, fundraising, recruiting a technical team, and very large-scale system architecture.\u003c\/p\u003e\n\n\u003ch3\u003eFormat\u003c\/h3\u003e\n\u003cp\u003ePDF, approximately 5,300 words divided into 8 modules and 3 appendices, with a required deliverable at the end of each module. Immediate access after purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNo commercial results are promised: a technically flawless product that meets no need does not sell better than a shoddy product. The technical thresholds cited (performance, accessibility) come from public references, indicated each time — check their current version.\u003c\/em\u003e\u003c\/p\u003e","brand":"SIGNET","offers":[{"title":"Full access","offer_id":56073066447233,"sku":"SIG-FO-APP","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/3557\/1073\/files\/hf_20260810_012130_4b92fd82-372f-4823-8539-42bfe4efdaa2.png?v=1786325814","url":"https:\/\/signet-luxury.store\/en\/products\/concevoir-un-site-ou-une-application-formation","provider":"Signet Luxury","version":"1.0","type":"link"}