The best way for my problem (One class using multi external api service)

Hello,

I search the best way, to implement all external services.

Example :

I would like to create a method to get price by all registrar api (InternetBS, NameBright, cloudflare, GoDaddy, etc..)

i imagine something like this :

//Get Information about domain :

$domain = $request->input('domain');
$registrarService->getInfo($domain);

//Register a domain :

$registrarSelected = $request->input('registrar');
$registrar = new $registrarSelected();
$registrar->register($domain);

and the method returning :

Registrar 1 : All informations from api Registrar 2 : All informations from api (etc...)

but my problem is how to :

What the best : controller / Interface / Trait / Service ?

how call all api with specific crendential (env variable ? like INTERNETBS_TOKEN=****** , .... )

What the best way? Thank lot