Replace the existing vendor's building automation system (BAS) with a new building automation system. Replace all existing vendor's N2 (Network Communications) based devices including the NAE's (Network Automation Engine) with new devices. All database servers shall use Microsoft SQL Server as the database platform; version 2016 or newer. MS SQL 2019 is preferred. All server software shall be able to run on Microsoft Hyper-V Virtual Machines running Microsoft Windows Server 2016 or newer. Microsoft Windows Server 2019 preferred. Failover server capapbility is preferred. Documented application programming interface (API) is preferred. Documented database schema is preferred.