Business Logic Service Invocation Service Configuration https://doc.cuba-platform.com/restapi-7.2/#rest_api_v2_services_config Invoke a Service (GET) https://doc.cuba-platform.com/restapi-7.2/#rest_api_v2_ex_service_get Invoke a Service (POST) https://doc.cuba-platform.com/restapi-7.2/#rest_api_v2_ex_service_post Custom Controller new, focus on custom API, not about the security aspects User Session API Security