Check Point firewall is used as edge protection.
Traffic to the internet and from the internet does go through the firewall where IPS, URL, and app policies are applied.
Check Point was also used as an internal firewall to segment traffic between the data center and the user network. Basically, all traffic from any user will have to be inspected by an internal Check Point firewall before any server is accessed.
Check Point is also used for PCI-DSS credit card checks within any email sent or received. This is effective in detecting credit card numbers within any email sent by a user in error and blocks that from being exposed.