Extension vs Observer?

[Aveeva]

Instead of observer why we need to develop extension?

[Vimal Kumar]

Hi @Aveeva,

Could you elaborate your question?

What do you mean?

[Sarvagya Pandey]

Hello @Aveeva ,

Sorry but I am not getting your point. Can you please elaborate it so that we can help you.

Thank you.

[vrunda_patel]

Hello @Aveeva,

Can you briefly describe your question by use case so we can help you

Thank you.

[Aveeva]

Restrict purchase based on categories and states.