In addition to the weather services provided by the existing version, the new version 3.0 adds the special function of "weather warning push notification" service.

新版本3.0除了原有版本所提供的天气服务外，特别加入“天气警告推播”服务。

youdao

Before the program stops making use of the processor, it registers its change of activity with Windows Push Notification Services (WNS) - software that runs on Microsoft's remote computer servers.

BBC: Skype slashes battery use for Windows 8 system launch