How to arrange international delivery on the site?

Question

Delivery

The bottom line is that you need to arrange delivery between countries as in aliexpress. Where to watch, what to read? We need answers to both organizational and technical questions. What APIs to use? What sites to visit? A more or less detailed answer is desirable from a person who has had experience with a similar

Answer 1

Exactly the same as inside the country.
You just need to find out if a specific courier / transport service has a service for sending abroad.
Russian Post - there is a shipment abroad. And they also have an API. We are using it.
Since you did not specify the country, I will assume that we are talking about the Russian Federation.
From hell knows what year (not from this year) they legally simplified exports for online stores in the Russian Federation. No tricky communication with customs is required.
Organizational moments:
Call the courier service, transport company, mail - and negotiate. Most likely, you will need to conclude an agreement.
Technical points:
API documentation will be provided to you. Sometimes it is open, sometimes there is test access. Sometimes - only after the contact / agreement is provided. Sometimes this documentation is intelligible, sometimes indistinct. Sometimes there are examples in different programming languages, sometimes there are no such examples.