AWS - Handson Best Practice Posted on 2019-09-13 | CloudFormation Define Security Group separated with Server Otherwise the Server Stack is not able to be deleted when Security Group is referenced by Other Servers Reward Makes Perfect Donate Bitcoin Post author: Rachel Rui Liu Post link: https://racheliurui.github.io/2019/09/13/markdown/AWS/AWS2019/Handson_bestPractise/ Copyright Notice: All articles in this blog are licensed under CC BY-NC-SA 3.0 unless stating additionally.