Platform as a service (PAAS) featuring computer software platforms for civil and water infrastructure engineering analytics; research and development of artificial intelligence; computer software consultation in the field of water infrastructure engineering; Software as a service (SAAS) services featuring software for water, stormwater and wastewater infrastructure monitoring, analysis, modeling, calibration, and infrastructure analytics and planning; Artificial intelligence as a service (AIAAS) services featuring software using artificial intelligence (AI) for water, stormwater and wastewater infrastructure monitoring, analysis, modeling, calibration, and infrastructure analytics and planning; Providing subscription-based temporary use of on-line non-downloadable software for hydrologic and hydraulic modeling, sanitary and combined sewer flow monitoring, and rainfall-derived infiltration and inflow (RDII) analysis