Deploy a single VPN concentrator at the headquarters and establish site-to-site VPNs to all remote sites, ensuring all traffic to Microsoft 365 services is routed through the headquarters.

Implement a distributed network design with local internet breakouts at each remote site, utilizing Microsoft Entra Internet Access as a secure web gateway for direct and secure access to Microsoft 365 services, while applying consistent security policies across all sites.

Adopt a cloud-based security solution that offers a unified management console for security policies across all sites, without specifying the use of local internet breakouts or direct access to Microsoft 365 services.

Deploy a dedicated MPLS network connecting all remote sites to the headquarters, ensuring all Microsoft 365 traffic is securely routed through the MPLS network to the headquarters before accessing the internet.