I am familiar with Magento 2 extension development but can anyone explain step by step extension development changes in Magento 2.3.3 by writing a simple "Hello_World" extension.
In Magento 2.3.x no more setup folder available and they just removed installschema and upgradeschema file, So the purpose behind this module development is to get proper knowledge and changelog for Magento2.3.3 extension development.
I am still able to install and use some Magento 2.2.x extension in Magento 2.3.X So I'm not getting the exact mechanism behind this.
Can anyone help me remove my confusion, Any help would be appreciated.
Thanks In Advance.
