diff --git a/src/data/roadmaps/vibe-coding/content/implement-spec-driven-development-sdd@O9W3d1q1yJmfRJHnfognN.md b/src/data/roadmaps/vibe-coding/content/implement-spec-driven-development-sdd@O9W3d1q1yJmfRJHnfognN.md
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+# Implement Spec-Driven Development (SDD)
+
+Spec-driven development means writing a clear document that describes what you want to build before you start prompting. Instead of jumping straight into asking AI to write code, you first describe the features, the user flows, the data structure, and any important rules. You then give this document to the AI at the start of each session so it always has the full picture.
+
+Visit the following resources to learn more:
+
+- [@article@A Practical Guide to Spec-Driven Development](https://docs.zencoder.ai/user-guides/tutorials/spec-driven-development-guide)
+- [@article@Understanding Spec-Driven-Development: Kiro, spec-kit, and Tessl](https://martinfowler.com/articles/exploring-gen-ai/sdd-3-tools.html)
+- [@article@How to write a good spec for AI agents](https://addyosmani.com/blog/good-spec/)
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diff --git a/src/data/roadmaps/vibe-coding/content/replit@Ubk4GN0Z4XlDJ3EbRXdxg.md b/src/data/roadmaps/vibe-coding/content/replit@Ubk4GN0Z4XlDJ3EbRXdxg.md
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-# Replit
+# Copilot
 
-Replit is a cloud-based integrated development environment (IDE) that lets you write and run code in various programming languages directly in your browser. Think of it as a portable coding studio that you can access from anywhere, allowing you to collaborate with others and rapidly prototype projects. It offers features like real-time collaboration, package management, and deployment tools, making it a convenient platform for coding education and quick development.
+GitHub Copilot is an AI-powered coding assistant that helps you write code faster. It suggests lines of code and even entire functions as you type, learning from your style and comments to provide relevant suggestions. It's like having a coding partner that understands your intentions and helps you bring them to life.
 
 Visit the following resources to learn more:
 
-- [@official@Replit](https://replit.com/)
-- [@article@What is Replit? An honest look at the AI app builder in 2025](https://www.eesel.ai/blog/replit)
-- [@video@Replit in 60 Seconds: everything you need to know](https://www.youtube.com/watch?v=gVPsrXy2Hg8)
-- [@video@Getting Started with Replit](https://www.youtube.com/watch?v=St95nPOwsa8&list=PLto9KpJAqHMTzEMDAFT4r5LlI4NByngyT)
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+- [@official@GitHub Copilot Docs](https://docs.github.com/en/copilot)
+- [@official@Tutorials](https://docs.github.com/en/copilot/tutorials)
+- [@video@Getting started with GitHub Copilot | Tutorial](https://www.youtube.com/watch?v=n0NlxUyA7FI)
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