CoreSite Realty leases data center space to those with data center needs. The real estate investment trust (REIT) owns, develops, and operates these specialized facilities, which require enough power, security, and network interconnection to handle often complex IT operations. Its property portfolio includes more than 15 operating data center facilities, with additional space under development. These properties comprise around 3 million rentable sq. ft. and are located in major US tech hubs, including Silicon Valley. Tenants include enterprise organizations, communications service providers, media and content companies, government agencies, and schools. The REIT has grown along with demand for data center space.