Formal environment：

The proprietary DingTalk is provided to the third party for application development and use, and the environment is accessible in the public. There is a certain guarantee for stability.Operational status (domain name configured in SDK, API call) domain name：openplatform.dg-work.cn

Description for interface requests
Full interface address: https://environment domain name/+access name. For example:https://openplatform.dg-work.cn/gettoken.json