Fiber internet is connectivity delivered over fiber optic cables that move data as light. That's why it's faster, more reliable, and a lot less moody than broadband built on copper or coaxial lines. Cable utilizes familiar copper wiring originally built. Right now, fiber internet has the fastest plans and symmetrical speeds, but that's probably going to change in the next several years as cable internet incorporates new technology enabling multi-gig symmetrical speeds. We'll give clear, accessible explanations (with example scenarios) to help you decide which suits your needs best. A fiber optic cable. Both technologies can look fast in provider ads, but they behave differently when a real household starts streaming, gaming, taking meetings, and uploading files at the same time.