Summary
Developer advocates Yohan Lasorsa (Microsoft) and Olivier Leplus (AWS) present a practical survey of how AI has embedded itself into every stage of the web development lifecycle in 2026, delivering live demos throughout on a sample e-commerce application called Seine.
The first segment covers VS Code coding agents augmented by a “skills” plugin system — lightweight markdown files conforming to an open specification that inject domain-specific context and tool access (GitHub CLI, Playwright test recording, front-end design heuristics) into agents on demand. The second segment demonstrates Chrome DevTools’ emerging AI integration, which can modify CSS live in the browser and then write those changes back to source files directly via a workspace connection — eliminating the traditional copy-paste loop between DevTools and the editor. A third segment introduces the W3C’s draft browser-native AI APIs, including a Prompt API, Summarize API, and Rewrite API, which run models locally in the browser without network calls or token costs, shown running on-device in a real application.
The session closes with guidance on adapting web applications for AI agent users — covering semantic HTML structure, ARIA roles, and interaction patterns that make apps navigable by automated agents alongside human users — reflecting the emerging reality that web traffic increasingly includes non-human clients.
📺 Source: AI Engineer · Published April 10, 2026
🏷️ Format: Tutorial Demo
