The phrase "an expansive network" is correct and usable in written English.
You can use it to describe a wide-ranging or extensive system of connections, whether in a social, technological, or organizational context.
Example: "The company has developed an expansive network of partners and suppliers across the globe."
Alternatives: "a vast network" or "a broad network".
He attracted an expansive network of friends with his affable demeanor.
To prepare, market and transport the natural gas, companies are building an expansive network of regional field offices, processing plants and other infrastructure.
Reports of weapons crossing the border are difficult to verify, but the FSA has an expansive network of smugglers who travel from Turkey to provide medical equipment, winter clothing, food, satellite phones and sensitive messages.
Sik's manuscript connected the powerful Gulenist movement — an expansive network of people linked by the teachings of Sufi theologian Fethullah Gulen — to the police, supporting the already widespread theory that Turkey's security forces were corrupted by Gulenist influence.
Google's cloud already has an expansive network of users.
Instead, they rely on an expansive network of driving partners.
With eighty-four offines in sixty-three countries, the D.E.A. has an unusually expansive network of agents and informants.
And for those of us entering winter, indoor exercise tracking is welcome, especially if those apps live in a more expansive network.
CSH Summit 2016 participants are engaging a diverse, expansive network and connecting to the issues and discussions shaping supportive housing today and influencing its growth tomorrow.
Burgeoning collective Moving Castle has mastered this technique, starting in 2013 and quickly building their expansive network by executing a thoroughly calculated approach to utilizing the modern Internet.
In simple terms, a cloud supported by an expansive intelligent network, underpinned by location savvy internet hubs will enable organisations to cheat the speed of light.
