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We might need to deploy multiple networks all across the globe. So, we can use Azure Firewall Manager which can configure Policies (for example, we can have some rules that apply to a region) that are applied to multiple firewalls in a specific region : Centralization of policy configuration with a parent policy whose rules are inherited by the children policies.
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Azure Firewall Manager is much more than a Network Security Group, we have DNs management, Threat Intelligence, etc.
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