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Overlaying Vs Extending Components in AEM

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I'm currently navigating through custom component development in Adobe Experience Manager (AEM), and I'd like to gain understanding of the concepts of overlaying and extending components.

Could you please elaborate on the following aspects:

  1. Overlaying Components: What does it mean to overlay a component in AEM, and what are the primary use cases where overlaying is the most suitable approach? Can you share a real-world example where overlaying a component has proven to be effective?

  2. Extending Components: How does extending a component differ from overlaying, and what are the key scenarios where extending components is advantageous? Can you provide a practical use case that showcases the benefits of extending a component in terms of code reuse and maintainability?

  3. Common Pitfalls: Are there any common pitfalls or challenges associated with overlaying or extending components that developers should be aware of? What are the potential implications for future AEM updates and compatibility?

Thank you in advance for your help. 

1 Accepted Solution

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Correct answer by
Community Advisor

Hello @aem101 

 

Please refer to an existing thread which answers your questions:

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/overlay-vs-extend/m-p/2966...

 

 


Aanchal Sikka

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1 Reply

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Correct answer by
Community Advisor

Hello @aem101 

 

Please refer to an existing thread which answers your questions:

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/overlay-vs-extend/m-p/2966...

 

 


Aanchal Sikka