Digitization of existing buildings

How can the benefits of digitization be also used for the management of existing buildings?
In order to achieve the best possible results at a comparably manageable expense, it makes sense to rely on the efficient use of smart data. In advance, it is also important to clarify the following questions individually for each company:
1) What goals do I want to achieve for my real estate portfolio?
2) What information is needed to achieve these goals?
3) How do I get the necessary data also as efficiently as possible?
4) How does this data finally become real information?
5) How can a continuous digital process also be established?
Software for real estate evaluation finally supports the implementation of the digitization of existing buildings.