> Markdown version of [/videos/world-congress-2026-europe?page=29](https://www.wearedevelopers.com/videos/world-congress-2026-europe?page=29). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Videos 2123 videos · 23049 moments · 1194.7 hours of content ## World Congress 2026 videos ### Back to the Roots: Testing in the Age of AI AI effortlessly generates tests, but blindly trusting them creates a dangerous illusion of coverage. Reclaim your application's intent with foundational testing principles for robust, cost-effective code. - **Speakers:** Jakub Janczyk - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 29:50 - [Watch](https://www.wearedevelopers.com/videos/100021-back-to-the-roots-testing-in-the-age-of-ai) ### Product Innovation through Partnerships - Search and Local Services How did an entertainment app become a powerful discovery engine? Discover how TikTok uses strategic product partnerships to transform passive scrolling into direct offline consumer action. - **Speakers:** Lindsey Kelt Zikry - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 25:39 - [Watch](https://www.wearedevelopers.com/videos/100020-product-innovation-through-partnerships-search-and-local-services) ### Design Systems for the Machines - How to Make AI Understand Your UI AI agents can parse your DOM, but they consistently fail to deduce intent. Discover how to build machine-readable design systems using flawless HTML and ARIA signals. - **Speakers:** Jennifer Wjertzoch - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 24:30 - [Watch](https://www.wearedevelopers.com/videos/100019-design-systems-for-the-machines-how-to-make-ai-understand-your-ui) ### From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform Decentralized pipelines are quietly crushing developer productivity. Treat Continuous Delivery as a centralized platform instead. Learn how this shift eliminates infrastructure friction and safely accelerates your deployment frequencies. - **Speakers:** Dominik Krichbaum - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 22:57 - [Watch](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) ### Your Distributed System Just Got a Brain. Now What? Treating AI as a predictable microservice will inevitably collapse your distributed systems. Discover why engineering teams must never deploy an artificial brain without a deterministic nervous system. - **Speakers:** Marcin Makowski - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 14:23 - [Watch](https://www.wearedevelopers.com/videos/100017-your-distributed-system-just-got-a-brain-now-what) ### One Color to Rule Them All: Relative CSS Colors in Practice Stop hand-picking rigid hex codes for every UI state. Learn how relative CSS colors let you automatically generate scalable, accessible palettes from a single base token. - **Speakers:** Mert Akça - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 9:04 - [Watch](https://www.wearedevelopers.com/videos/100016-one-color-to-rule-them-all-relative-css-colors-in-practice) ### 7 Ways to Fail at Building a Platform Building your own developer platform isn't a competitive edge—it's a maintenance nightmare. Discover seven fatal DIY pitfalls and why engineering leaders are ditching custom builds for off-the-shelf IDPs. - **Speakers:** Michael Coté - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 30:45 - [Watch](https://www.wearedevelopers.com/videos/100015-7-ways-to-fail-at-building-a-platform) ### What’s New in Web? 2026 Edition The 2026 web platform introduces radical shifts for developers. Master native reactive Signals, local browser LLMs, and the new HTTP QUERY method. Prepare your stack for agentic browsing. - **Speakers:** Christian Liebel - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 31:45 - [Watch](https://www.wearedevelopers.com/videos/100014-what-s-new-in-web-2026-edition) ### Building Trust Through Private and Verifiable AI Can you run cloud LLMs on sensitive data without exposing user prompts? Project PVC achieves this using Trusted Execution Environments. Learn to deploy verifiable, zero-trust AI infrastructure. - **Speakers:** Mingshen Sun - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 22:30 - [Watch](https://www.wearedevelopers.com/videos/100013-building-trust-through-private-and-verifiable-ai) ### Let’s Talk Quality! AI rapidly accelerates coding. However, it also introduces untested flaws and severe cognitive overload. True quality engineering must remain a strictly human responsibility. - **Speakers:** Lilia Gargouri - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 27:29 - [Watch](https://www.wearedevelopers.com/videos/100012-let-s-talk-quality) ### Stop using Node.js like in 2020! What changed and what you can do today with Node.js Are you still writing Node.js like it's 2020? Discover how modern native APIs replace outdated dependencies like nodemon and ts-node. Drastically reduce your dependency tree today. - **Speakers:** Alfonso Graziano - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 28:22 - [Watch](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) ### Ship Smarter Agents, Not Bigger Prompts Bigger prompts don't mean better agents. Stop wasting tokens on overloaded context windows. Discover a structured framework to build smarter, cost-effective AI workflows with GitHub Copilot. - **Speakers:** April Yoho - **Event:** World Congress 2026 Europe - **Published:** July 9, 2026 - **Duration:** 28:51 - [Watch](https://www.wearedevelopers.com/videos/100010-ship-smarter-agents-not-bigger-prompts) [Next page](https://www.wearedevelopers.com/videos/world-congress-2026-europe?page=30)