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+# License
+
+This project uses a dual-license model.
+
+## Content — CC BY-SA 4.0
+
+All written content, documentation, exercises, images, and diagrams are
+licensed under the
+[Creative Commons Attribution-ShareAlike 4.0 International](LICENSES/CC-BY-SA-4.0)
+license.
+
+You are free to share and adapt the material for any purpose, including
+commercially, as long as you give credit and distribute derivative works under
+the same license.
+
+## Code Samples — MIT
+
+All code in `samples/` directories throughout the repository is licensed under
+the [MIT License](LICENSES/MIT).
+
+You are free to use, modify, and distribute the code with no copyleft
+restrictions.
+
+## Which license applies?
+
+| Path | License |
+|------|---------|
+| `*/samples/**` | MIT |
+| Everything else (`.md` files, images, diagrams) | CC BY-SA 4.0 |