Information Technology (IT) has been the main infrastructures in conducting businesses nowadays. IT had firstly emerged to automate business operations, in turn, IT has been able to make business operations more effective due to the nature of IT as a business enabler. Consequently, resource-based business efficiency is also the cornerstone of utilizing IT. Most recently, IT has become OTT (Over the Top), where IT is only the basic layer for conducting online business. In essence, the aforementioned estimations all still rely on qualitative estimates and are not yet based on quantitative estimates. This chapter wants to try to offer an IT value model whose value estimation can be done quantitatively using the Partial Adjustment Valuation (PAV) approach.