I see apps that can be added to shops that generate pop-ups. One in particular I saw was an address validation service where after a user enters an address a pop-up appears telling the user, if the address was bad, that the address had a problem and that it should be fixed.
What I want to do is similar to that workflow. Upon an end user entering an address, I want to call a third party API to validate the address and display back to the user in real-time the deliverability of the address.
Why not use the the 3rd party app you may ask? I have my own API to do the address validation and many others so I want to call my own services.
Specifically, now in 2022 with all the things that have been updated with the platform these are my questions:
#1 Is it possible?
#2 Is it possible in Shopify or Shopify Plus or both?
#3 If it’s only possible in Shopify Plus do I need to pay for a Shopify Plus account to be able to create and test it?
#4 Can this work in the checkout module or other modules that involve end user data entry?
#5 Any documentation that spells this out more clearly would be helpful.