> Markdown version of [/videos/world-congress-2025?page=11](https://www.wearedevelopers.com/videos/world-congress-2025?page=11). 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 2223 videos · 24118 moments · 1245.7 hours of content ## World Congress 2025 videos ### Software Engineering Social Connection: Yubo’s lean approach to scaling an 80M-user infrastructure How did a five-person team scale infrastructure for 84 million users? Discover Yubo's lean GitOps strategy for conquering technical debt and slashing observability costs. - **Speakers:** Mikael Robert - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 17:44 - [Watch](https://www.wearedevelopers.com/videos/1583-software-engineering-social-connection-yubo-s-lean-approach-to-scaling-an-80m-user-infrastructure) ### End-to-End TypeScript: Completing the Modern Development Stack Stop letting the `any` type ruin your codebase. Learn how to architect a modern, fully type-safe TypeScript stack from the database to the frontend without vendor lock-in. - **Speakers:** Marco Podien - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 29:17 - [Watch](https://www.wearedevelopers.com/videos/1580-end-to-end-typescript-completing-the-modern-development-stack) ### 82 Bugs I Collected in a Year You Won’t Believe Made It to Production One engineer documented hundreds of production UI bugs. These glaring defects carry severe business risks. Discover proactive testing strategies to eliminate costly front-end leaks. - **Speakers:** François Martin - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 31:54 - [Watch](https://www.wearedevelopers.com/videos/1581-82-bugs-i-collected-in-a-year-you-won-t-believe-made-it-to-production) ### Accessibility Test Driven Development Adding accessibility to finished software is like stuffing blueberries into a baked pie. It causes bugs and technical debt. Shift left using test-driven development instead. - **Speakers:** Maria Korneeva - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 23:33 - [Watch](https://www.wearedevelopers.com/videos/1578-accessibility-test-driven-development) ### Pragmatic Blockchain Design Patterns: Integrating Blockchain into Business Processes Think integrating blockchain demands a massive architectural rewrite? Discover four pragmatic design patterns to seamlessly embed Web3 capabilities into your existing stack using targeted microservices. - **Speakers:** Michiel Mulders - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 25:42 - [Watch](https://www.wearedevelopers.com/videos/1579-pragmatic-blockchain-design-patterns-integrating-blockchain-into-business-processes) ### gRPC Load Balancing Deep Dive Your new pods sit idle while initial targets remain overloaded by long-lived gRPC streams. Discover how to eliminate HTTP/2 connection hotspots using advanced layer 7 load balancing. - **Speakers:** Max Hausner, Yves Fauser - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 29:17 - [Watch](https://www.wearedevelopers.com/videos/1576-grpc-load-balancing-deep-dive) ### Blueprints for Success: Steering a Global Data & AI Architecture Merck stopped unauthorized AI use by redirecting employees to a secure, internal GPT clone. Dominic Schneider reveals the architecture governing and scaling over 1,400 enterprise data solutions. - **Speakers:** Dominik Schneider - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 19:44 - [Watch](https://www.wearedevelopers.com/videos/1577-blueprints-for-success-steering-a-global-data-ai-architecture) ### Lessons learned from observing a billion API requests An analysis of a billion API requests reveals a shocking vulnerability: nearly half lack basic authentication. Learn to secure your architecture and prepare your endpoints for AI consumers. - **Speakers:** Pratim Bhosale - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 23:47 - [Watch](https://www.wearedevelopers.com/videos/1574-lessons-learned-from-observing-a-billion-api-requests) ### Possibilities with Web Capabilities Can your web app interact directly with local hardware? Discover how Project Fugu's powerful APIs securely bridge the gap between native and web experiences. - **Speakers:** Rowdy Rabouw - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 27:05 - [Watch](https://www.wearedevelopers.com/videos/1575-possibilities-with-web-capabilities) ### Privacy-first in-browser Generative AI web apps: offline-ready, future-proof, standards-based Ditch costly cloud APIs and build fully private, offline-ready generative AI web apps. Run models locally using the WebNN API to ensure zero latency and absolute data privacy. - **Speakers:** Maxim Salnikov - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 30:13 - [Watch](https://www.wearedevelopers.com/videos/1572-privacy-first-in-browser-generative-ai-web-apps-offline-ready-future-proof-standards-based) ### Optimistic UI Updates: Enhancing User Experience and Improving Interaction to Next Paint (INP) Generic loaders might pass INP thresholds, but they destroy perceived performance. Learn to mask backend latency entirely using optimistic UI patterns and React 19. - **Speakers:** Marc Müller - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 20:30 - [Watch](https://www.wearedevelopers.com/videos/1573-optimistic-ui-updates-enhancing-user-experience-and-improving-interaction-to-next-paint-inp) ### Blazing Fast Page Navigation with Speculation Rules Human reaction times are inherently slow. Turn this hidden delay into blazing fast, zero-latency web navigation using the Speculation Rules API to pre-render links mid-click. - **Speakers:** Medhat Dawoud - **Event:** World Congress 2025 - **Published:** August 20, 2025 - **Duration:** 36:16 - [Watch](https://www.wearedevelopers.com/videos/1570-blazing-fast-page-navigation-with-speculation-rules) [Next page](https://www.wearedevelopers.com/videos/world-congress-2025?page=12)