Add content for infrastructure as code (#2640)

* Update 100-infrastructure-as-code.md

* Update content/roadmaps/114-software-architect/content/115-operations-knowledge/100-infrastructure-as-code.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/114-software-architect/content/115-operations-knowledge/100-infrastructure-as-code.md

@@ -1 +1,8 @@
-# Infrastructure as code
+# Infrastructure as Code
+
+Infrastructure as Code (IaC) is the managing and provisioning of infrastructure through code instead of through manual processes.
+
+With IaC, configuration files are created that contain your infrastructure specifications, which makes it easier to edit and distribute configurations. It also ensures that you provision the same environment every time. By codifying and documenting your configuration specifications, IaC aids [configuration management](https://www.redhat.com/en/topics/automation/what-is-configuration-management) and helps you to avoid undocumented, ad-hoc configuration changes.
+
+<BadgeLink colorScheme='yellow' badgeText='Read' href='(https://www.redhat.com/en/topics/automation/what-is-infrastructure-as-code-iac'>What is infrastructure as code</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=zWw2wuiKd5o'>Video introduction to infrastructure as code</BadgeLink>