Start with the locations and applications
A WAN connecting two sites may need a simple private circuit and diverse Internet. A network spanning 100 locations worldwide may combine several access technologies, carriers and cloud connections under one operating design. In both cases, the architecture should begin with the business requirements.
Choose the right access for each site
Ethernet and private lines provide managed connectivity between important locations. Dedicated Internet can support cloud access and SD-WAN overlays. MPLS may remain useful where private routing, consistent classes of service or an established global footprint matter.
Use SD-WAN to coordinate a diverse network
SD-WAN can combine multiple access services, apply application-aware policies and improve visibility across branches. It does not replace the underlying circuits, so the quality, diversity and performance of those connections still matter.
Apply wavelengths and dark fiber where capacity demands it
Wavelengths provide dedicated high-capacity transport, while dark fiber offers greater control and scaling potential. These technologies often support headquarters, data centers, cloud hubs and other critical sites rather than every branch.
Design for growth, diversity and global operations
Compare bandwidth, security, cloud access, physical diversity, carrier overlap, local access, support coverage, lead times and total cost. The best global WAN is often a coordinated mix—not one product forced onto every location.
Share the locations, applications, capacity, diversity and timeline requirements.
Evaluate the WANRelated services
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