Azure Resource Manager and Resource Manager Templates are used to manage resources in Azure. For each resource there is a view in the console with all the options for management and configuration of that resource on the left hand side - networking, security, access control, configuration, backups etc. all are available from the console. Also all are able to be configured using resource manager templates

Azure Resource Manager has components like Management Group -> Subscriptions -> Resource Groups which is used to managed resources.

ARM Template or Power shell/Azure CLI can be used to deploy azure resources.