Designing for the buildings and circuits that exist here
Regional network design is constrained by physical reality more than by product choice. Older buildings in this area hold masonry and plaster that wireless does not pass through politely, plants and warehouses hold racking and metal that changes coverage as inventory moves, and campus sites are often connected by fiber that someone trenched years ago with no current documentation. A survey answers questions a datasheet cannot.
Circuit availability varies street by street. Fiber is available at some addresses and not at the one next door, and a design that assumes symmetric bandwidth everywhere will fail at the branch office. We design around the connectivity actually available at each site, including failover where an outage would stop work, and we document what is installed so the next change does not begin with discovery.