When a seller uses an Integrator's service, it means a key provided by Coupang to perform authentication between the seller and the Coupang system and to identify the seller (vendorId) registered in Coupang.
The OpenAPI key is provided as an access key and a secret key, and Coupang authentication must be done through this key to perform tasks such as product registration and order collection in Coupang on the Integrator's platform (seller tool or service).