since it describes the actual running state of the system at any given time. After new features and fixes are merged to Git, the deployment pipeline is triggered, and once the image is ready to be released

服务框架 KV/RDS CVM/Docker IEG PCG WXG CDG “烟囱式”的业务支持体系 幸福的烦恼 ⚫ 重复造轮子，每个部门一套轮子 ⚫ 缺乏统一规范，包括开源代码在内 Bug 多 ⚫ 开源文化落后，共享精神差，很多基础框架没有内部开源 ⚫ 技术支持不足，文档陈旧 ⚫ 数据技术不互通，部门间代码相互封闭，跟业界缺乏交流 ⚫ 缺乏维护，越来越多的历史遗留组件 ⚫ 没有技术图谱

can easily move a release to a previous environment (e.g. production to QA in order to examine a bug) ● has a configuration mechanism in place to define multiple version of the same environment (i