Merge pull request #6992 from 0xshadow-dev/post/axum-introduction

[Walkthrough]: added axum introduction walkthrough

Author: mariannegoldin

draft/2025-09-10-this-week-in-rust.md

@@ -51,6 +51,7 @@ and just ask the editors to select the category.
 ### Observations/Thoughts
 
 ### Rust Walkthroughs
+* [Axum Backend Series - Introduction](https://blog.0xshadow.dev/posts/backend-engineering-with-axum/axum-introduction/)
 
 ### Research