# SDX Development

> Custom websites, SaaS, MVPs and business software for European and international teams. Work directly with a senior developer based in France.

## Main pages

- [Custom Web & Software Development in Europe | SDX](https://sdx-development.com/en/index.md): Custom websites, SaaS, MVPs and business software for European and international teams. Work directly with a senior developer based in France.
- [Web, SaaS, Custom Software & AI Development | SDX](https://sdx-development.com/en/services.md): Choose the right development service: websites, redesigns, SaaS, MVPs, business software or AI integration. Direct technical contact from France.
- [Senior Web & Software Developer in France | Sébastien Descloux](https://sdx-development.com/en/about.md): Sébastien Descloux, senior freelance developer and CTO based in France. Websites, SaaS and business software for European and international projects since 2013.
- [AI, RAG & Business Automation Development | SDX](https://sdx-development.com/en/ai-rag-automation.md): Evaluate and integrate document search, AI assistance, computer vision and n8n workflows. Data, permissions, quality and operating costs scoped around your business.
- [Website, SaaS & Custom Software Pricing in EUR | SDX](https://sdx-development.com/en/pricing.md): Compare starting prices, indicative timescales, included scope and exclusions for websites, SaaS, automation and maintenance. Project quotes in euros.
- [News & insights](https://sdx-development.com/en/news.md): SDX Development news on SaaS development, applied AI, computer vision and RAG systems.
- [Discuss Your Web or Software Project | Europe & International](https://sdx-development.com/en/contact.md): Describe your website, SaaS or business software project. Direct contact with a developer based in France, working remotely with European and international teams.
- [Legal notice](https://sdx-development.com/en/legal-notice.md): Editor, Publishing Director, IONOS Host and Legal Information from SDX Development.
- [Privacy policy](https://sdx-development.com/en/privacy-policy.md): Processing of personal data, purposes, legal bases, recipients, retention and rights on the SDX Development website.
- [Cookie policy](https://sdx-development.com/en/cookie-policy.md): Required cookies, optional services, consent and preferences management on SDX Development website.
- [Web & cybersecurity](https://sdx-development.com/en/news/web-cybersecurity.md): Corrective, web architecture and practical practices to maintain robust, fast and secure applications.
- [AI & development](https://sdx-development.com/en/news/ai-development.md): Models, APIs, costs and development methods to integrate artificial intelligence into useful products.
- [AI & architecture](https://sdx-development.com/en/news/ai-architecture.md): Protocols, interoperability and architecture choice to build agent systems that remain legible and scalable.
- [Product management](https://sdx-development.com/en/news/product-management.md): Cadmage, budget, priorities and feedback to transform an idea into a sustainable digital product.
- [Applied AI](https://sdx-development.com/en/news/applied-ai.md): Computer vision, RAG and automation: from terrain to prototype to measurable use.
- [AI & infrastructure](https://sdx-development.com/en/news/ai-infrastructure.md): Calculation, inference, orchestration and energy efficiency behind the new artificial intelligence services.
- [AI & cybersecurity](https://sdx-development.com/en/news/ai-cybersecurity.md): isolation, control and defense in depth to operate agents and generated code without opening infrastructure.
- [Custom Web Development for European Businesses | SDX](https://sdx-development.com/en/custom-web-development.md): Professional websites for European businesses: clear content, responsive design, CMS, technical SEO and deployment. Work directly with a developer in France.
- [Custom Business Software Development | Europe & International](https://sdx-development.com/en/custom-business-software.md): Replace disconnected spreadsheets and manual workflows with custom business software. Internal tools, APIs and process automation for European and international teams.
- [Website Redesign & SEO Migration in Europe | SDX](https://sdx-development.com/en/website-redesign.md): Modernise your website with a structured audit, content review and SEO migration plan. Responsive design, performance and direct technical support from France.
- [Website development](https://sdx-development.com/en/news/website-development.md): Budget, redesign, SEO, maintenance and choice of provider to build a truly useful professional site.
- [Custom SaaS & MVP Development in Europe | SDX](https://sdx-development.com/en/saas-mvp-development.md): Build a focused SaaS or MVP with product discovery, accounts, APIs and a clear path to production. Senior development support for European teams, based in France.
- [Web & Business Software Case Studies | SDX Development](https://sdx-development.com/en/case-studies.md): Explore delivered websites and business tools, with the context, scope and my contribution to each project. SDX Development is based in France.
- [Idea to Software: Custom ERP, SaaS & Inspection | SDX](https://sdx-development.com/en/case-studies/idea-to-software.md): Design and development of Idea to Software: job management, constraint-based scheduling, inventory, finance, a customer portal and ITS Report video inspection.
- [Résiliner: Industrial Website and Custom CMS | SDX](https://sdx-development.com/en/case-studies/resiliner.md): Résiliner website development: C.A.R.E. journeys, technical pages, references, franchise information and a custom CMS for content, media and enquiries.
- [RATP Connected Toilets: IoT Monitoring & Maintenance | SDX](https://sdx-development.com/en/case-studies/operational-dashboards.md): Custom software for RATP connected toilets: equipment monitoring, sensor and incident correlation, device commands and service availability analysis.
- [Génération Location: Vehicle Catalogue and CMS | SDX](https://sdx-development.com/en/case-studies/generation-location.md): Génération Location website: vehicle catalogue, detailed listings, search criteria and a CMS with a dedicated module for managing rental vehicles.

## News

- [TanStack npm Attack: 42 Packages Compromised, CrowdSec Affected](https://sdx-development.com/en/news/web-cybersecurity/tanstack-npm-attack-42-packages-compromised-crowdsec-affected.md): An attack targeting 42 TanStack packages on npm reportedly contributed to the cloning of approximately 170 private CrowdSec repositories.
- [Cloudflare revises AI bot controls](https://sdx-development.com/en/news/web-cybersecurity/cloudflare-revises-ai-bot-controls.md): Cloudflare is changing AI bot controls on September 15, 2026. New settings, multi-purpose crawlers, and SEO risks to review.
- [OpenAI: How Habitat Serves More Than 70 Million Requests per Second](https://sdx-development.com/en/news/ai-infrastructure/openai-habitat-storage-70-million-requests-per-second.md): OpenAI unveils Habitat, its storage infrastructure handling more than 70 million requests per second, and explains its transition from Python to Rust.
- [Chrome: CVE-2026-85046 vulnerability is already being exploited](https://sdx-development.com/en/news/web-cybersecurity/chrome-zero-day-vulnerability-v8-cve-2026-85046.md): Google fixes CVE-2026-85046, a Chrome zero-day vulnerability already being exploited. Affected versions, risks, and the procedure for updating the browser.
- [GPT-6 Astra: OpenAI’s AI Moves to Execution](https://sdx-development.com/en/news/ai-cybersecurity/gpt-6-astra-openai-ai-agents-computer-code.md): OpenAI launches GPT-6 Astra, an AI capable of coding, browsing, using a computer, and carrying out complex tasks from start to finish.
- [Mantis: AI agents that detect and fix code vulnerabilities](https://sdx-development.com/en/news/ai-cybersecurity/mantis-ai-agents-detect-fix-code-vulnerabilities.md): Google publishes Mantis, an open source framework that coordinates several AI agents to analyze code, verify vulnerabilities and propose fixes.
- [WordPress: critical vulnerabilities affect popular plugins and themes](https://sdx-development.com/en/news/web-cybersecurity/wordpress-critical-plugin-theme-vulnerabilities-august-2026.md): WPMU DEV, Avada, TranslatePress, Pods and GiveWP are affected by critical vulnerabilities. Affected versions, patches and good WordPress practices.
- [How much does a professional website cost in France in 2026?](https://sdx-development.com/en/news/website-development/professional-website-cost-2026-ile-de-france.md): Website showcase, e-commerce or custom application: what budgets across Europe and internationally in 2026 and what posts to compare before signing?
- [AI agent identities: Google Cloud rolls out its access manager](https://sdx-development.com/en/news/ai-cybersecurity/google-cloud-ai-agent-identities.md): Agent Identity becomes available to centralize identifiers, authenticate agents and better control their access to external tools.
- [Running AI-generated code: Ray and gVisor strengthen isolation](https://sdx-development.com/en/news/ai-cybersecurity/ray-gvisor-isolate-ai-generated-code.md): Google Cloud and Anyscale integrate gVisor to Ray sandboxes to isolate dynamic execution of post-training agents and workflows.
- [OpenAI Jalapeño: what a dedicated AI inference chip changes](https://sdx-development.com/en/news/ai-infrastructure/openai-jalapeno-ai-inference-chip.md): The first results of Jalapeño show why latency, memory, network and energy efficiency become as important as the model.
- [OpenAI lowers the price of GPT-5.6 Sol by more than 20%](https://sdx-development.com/en/news/ai-development/openai-cuts-gpt-5-6-sol-api-price.md): The temporary decrease in the cost of TPM-5.6 Sol changes the economic equation of co-pilots, RAG systems and AI automations used in production.
- [Next.js: a critical patch arrives on August 26, 2026](https://sdx-development.com/en/news/web-cybersecurity/nextjs-critical-security-fix-august-2026.md): Next.js prepares a security update for branches 16.3 and 15.5. In particular, a critical vulnerability must be corrected: projects in production must be updated quickly.
- [A2A joins Agentic AI Foundation: why it matters](https://sdx-development.com/en/news/ai-architecture/a2a-agentic-ai-foundation-interoperable-agents.md): After MCP to connect AIs to tools and data, A2A standardizes exchanges between agents from different technologies and organizations.
- [Why a SaaS project isn't priced like a brochure website](https://sdx-development.com/en/news/product-management/saas-pricing-vs-brochure-website.md): A SaaS is a software product: users, data, business rules, security and continuous evolution explain its budget and deadlines.
- [Computer vision with YOLO: from model to production workflow](https://sdx-development.com/en/news/applied-ai/computer-vision-yolo-production-workflow.md): A computer vision project is not limited to choosing YOLO: data, terrain conditions, integration and quality measurement count as much.
- [RAG: making the company's knowledge truly usable](https://sdx-development.com/en/news/applied-ai/rag-making-company-knowledge-usable.md): An RAG system links an AI to trusted documents to produce useful, sourcing and rights-of-access responses.

## Languages

- [Français](https://sdx-development.com/llms.txt)
- [English](https://sdx-development.com/en/llms.txt)
- [Español](https://sdx-development.com/es/llms.txt)

## Technical resources

- [Site sitemap](https://sdx-development.com/sitemap.xml)
- [News archive](https://sdx-development.com/sitemap-news.xml)