How are you, hacker? How are you, hacker? 🪐 What’s happening in tech today, November 21, 2025? The
           HackerNoon Newsletter
          brings the HackerNoon 
          homepage
          straight to your inbox.
          On this day,
          
            Tesla launched the SUV Cybertruck in 2019,  Albert Einstein's mass energy equivalence was published in 1905,  The first measurement of the speed of light in 1676, 
          
          and  we present you with these top quality stories. 
          
            From 
        Twitch Joins Australia’s List of Platforms Blocked for Minors
       to 
        How Search Engines Actually Answer Your Questions,
       let’s dive right in. HackerNoon Newsletter homepage On this day, Tesla launched the SUV Cybertruck Albert Einstein's mass energy equivalence was published The first measurement of the speed of light Twitch Joins Australia’s List of Platforms Blocked for Minors Twitch Joins Australia’s List of Platforms Blocked for Minors How Search Engines Actually Answer Your Questions How Search Engines Actually Answer Your Questions How Search Engines Actually Answer Your Questions How Search Engines Actually Answer Your Questions By @superorange0707 [ 12 Min read ] Modern search QA explained: how knowledge graphs, DeepQA, and MRC turn messy web pages into direct, trustworthy answers. Read More. @superorange0707 Read More. Google Gemini File Search - The End of Homebrew RAG? Google Gemini File Search - The End of Homebrew RAG? By @zbruceli [ 6 Min read ] Will Googles Gemini File Search kill homebrew RAG solutions? We test drive to compare function, performance and costs. Plus sample code for PDF QA app. Read More. @zbruceli Read More. Twitch Joins Australia’s List of Platforms Blocked for Minors Twitch Joins Australia’s List of Platforms Blocked for Minors By @techannouncements [ 1 Min read ] Australia will add Twitch to its under-16 social media ban taking effect Dec. 10, requiring platforms to block minor accounts or face major penalties. Read More. @techannouncements Read More. Build a Custom ChatGPT App and Tap Into 800 Million Users Build a Custom ChatGPT App and Tap Into 800 Million Users By @renalk [ 19 Min read ] Step by step manual for building an OpenAI ChatGPT App using MCP server and React widget. Read More. @renalk Read More. How to Migrate Existing Azure Functions to the .NET 8 Isolated Worker Runtime How to Migrate Existing Azure Functions to the .NET 8 Isolated Worker Runtime By @thatrajeevkr [ 5 Min read ] Step-by-step guide to upgrading existing Azure Functions to the .NET 8 isolated worker model for better performance, flexibility, and debugging. Read More. @thatrajeevkr Read More. 🧑‍💻 What happened in your world this week? It's been said that
          writing can help consolidate technical knowledge,
          establish credibility,
           and contribute to emerging community standards.
          Feeling stuck? We got you covered ⬇️⬇️⬇️ writing can help consolidate technical knowledge establish credibility and contribute to emerging community standards ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME We hope you enjoy this worth of free reading material. Feel free to forward this email to a nerdy friend who'll love you for it.See you on Planet Internet! With love, 
 The HackerNoon Team ✌️

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The HackerNoon Newsletter: 10 Marketing Moves Tech Companies Cant Afford to Skip Before 2026 (11/20/2025)

What's New in the HackerNoon Newsletter?

The HackerNoon Newsletter: How Search Engines Actually Answer Your Questions (11/21/2025)

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