The phrase "primary gateway" refers to the main entrance or pathway that is used as the main point of access or connection for something. Full definition
«Chapman Freeborn's customers can now enjoy a private jet experience on the largest passenger aircraft in the world, and the infrastructure of a world - leading airline, operating to primary gateway airports. (breakingtravelnews.com)
With the presidential election around the corner, Science asked experts in computer science, business, and law to weigh in on how companies like Google and Facebook, which function as the primary gateway to online information for millions of voters, could influence the outcome. (sciencemag.org)
These points will become the primary gateways of online traffic to our website or the store selling our book. (editionguard.com)