Which design pattern to use for integrating with an external service?

Question

PHP

The external service has authorization, adding / changing the n-th number of entities (user, order, etc.). The main task of the pattern is to get by with little bloodshed when replacing one external service with another when it needs to be replaced. Or the ability to switch between multiple external systems.
I will also be very grateful for sample projects on github. It seems to me that there are a lot of projects where one of several external systems is used, but nothing good has surfaced in memory.
The implementation will be in PHP.

Answer 1

Decorator\Facade