Hi, I'm new to Magento.
Can we migrate the existing extension which is installed on 2.3 the same extension we can use it on Magento 2.4?
Please let me know.
There is very less chance the extension will work in 2.4 due to the technical specifications Magento 2.4 follows.
You can ask the extension vendor to provide the latest version of that extension to avoid unavoidable circumstances.