Software as a service (SaaS) featuring software using physics, building automation system (BAS) data and artificial intelligence (AI) for use in monitoring the operational efficiency of buildings; software as a service (SaaS) featuring software using physics, building automation system (BAS) data and artificial intelligence (AI) for use in predicting building maintenance recommendations; software as a service (SAAS) featuring software using building automation system (BAS) data and artificial intelligence (AI) for use in estimating energy savings related to the efficient allocation of building resources.