Add the second talk for september

source/meetings/2024/september/index.md

@@ -32,6 +32,13 @@ below](#september24registration).
 > Starting from event storming with stakeholders and technical planning across squads to clear domain boundaries to  
 > how we used an event bus and agnostic accounting system to keep things clear, concise and extendable.
 
+### From Spaghetti to Lasagna: Layering your code with DDD
+
+[Lily Stoney](https://github.com/LilyStoney)
+
+> How to apply DDD to a monolithic codebase, the benefits and reasons why it can
+> be beneficial, and how the event storming process can make the process of
+> defining domain boundaries a simpler task!
 
 ## Afterwards