Ventas, Inc. is a real estate investment trust (REIT) with its properties located throughout the United States, Canada and the United Kingdom. The Company operates through three segments: triple-net leased properties, senior living operations and office operations. Under its triple-net leased properties segment, the Company invests in and owns seniors housing and healthcare properties throughout the United States and the United Kingdom and leases those properties to healthcare operating companies under triple-net or absolute-net leases that obligate the tenants to pay all property-related expenses. In its senior living operations segment, it invests in seniors housing communities throughout the United States and Canada and engages independent operators to manage those communities. In its office operations segment, the Company primarily acquires, owns, develops, leases and manages medical office buildings (MOBs) and life science and innovation centers throughout the United States.