The ''containers'' are basically a fully functional and portable computing environment whichthat provides a cloud or non-cloud computing environment surrounding the application and keeping it independent from other parallelly running evironmentsenvironments.<ref>{{Cite web|title=What is containerization?|url=https://www.redhat.com/en/topics/cloud-native-apps/what-is-containerization|url-status=live|access-date=2021-07-10|website=www.redhat.com|publisher=[[RedHat]]|language=en}}</ref> Individually each container simulates a different software application and run isolated processes by bundling related configuration files, libraries and dependencies. But, collectively multiple containers share a common [[Operating_system|OS]].
=== Security issues ===
*SecurityBecause threats to theof common [[Operating_system|OS]], security threats can affect the whole containerized system.
*In containerized environments, security scanners generally protect the OS but not the application containers, which adds unwanted vulnerability.
