noun
additional service; value-added service
Used especially in computing and business contexts for extra features or services beyond the basic offering.
このアプリは基本機能に加えて、有料の付加サービスを提供している。
This app offers paid additional services on top of the basic features.
付加サービスとして、24時間のサポートが含まれています。
24-hour support is included as an additional service.