Files are used to store the required configuration and steps needed to provision a server in the form of executable scripts. When a new adjustment to an existing server is necessary, the idea is to make these changes using the script files, instead of directly on the server. This will allow us to get the following benefits:

• Immutable servers
• Easy application of changes
• Having more than one identical server
• Rebuilding a new server from scratch very quickly, without errors

Moreover, technical people will be able to read and understand these scripts, allowing for an increase of shared understanding around the process of provisioning new infrastructure, which is excellent.