Backend Function Clarity

[OGmetamonkey]

Is the purpose of the backend functions simply to dynamically retrieve the secret key and prices id to fill the body (price, quantity, payment method) and headers (client secret key) of the function below in order to create a checkout session and retrieve a session id?

try { final result = await Dio().post( "https://api.stripe.com/v1/checkout/sessions", data: body, options: Options( headers: {HttpHeaders.authorizationHeader: auth}, contentType: "application/x-www-form-urlencoded", ), ); return result.data['id'];