The Business Center was added to the game in February, 2014. Building it is required before you can join a Corporation.

Available at level Level ?
Territory Territory 3x3
Buildings allowed to build Building 1
Construction time Time ?
Electricity Electricity -80
Yields experience for construction XP2 ?
Yields citizens' happiness Happiness +155
Price  ?
Upgrades Available Upgrade 5 (not yet released by Game Insight as of Dec 20, 2015)
Demolition costs Cannot be demolished

The Corporation Shop is a tab in the Business Center. Here you can purchase items you need for creating modules, expanding territory, and upgrading buildings, as well as a few unique buildings.