The phrase "extensive network" means having a large and wide-reaching group of connections and relationships with other people or organizations. Full definition
Successful people build extensive networks of contacts — both in the office, and outside of it. (inc.com)
The day is devised to provide attendees not only with information and insights into the most important features of each industry market, but also with extensive networking opportunities during the event. (publishingperspectives.com)
Our top level matchmaking service consultants will get to know the needs and find a suitable partner and dates through extensive networks, in addition to matching. (dir.meet-date.com)