It is a considerable project and organizational challenge to plan and adjust the size of the IT environment for SAP systems, both when the system is planned to be implemented from scratch, and when the existing infrastructure is upgraded to S/4HANA.
It is necessary to take into account a lot of variables for which some initial conditions should be assumed, and then to make an averaged estimation of their changes in time based on the current or expected number of system users, or also on performance, e.g. a number of order lines or invoices per year, month, day. This is just a minor example from the multitude of records generated in the system. Behind them there is a more or less complicated business logic resulting from the specific nature of operation of a given organization, SAP functions, non-standard integrations, etc. This results in the high uniqueness of each project, and thus increases the uncertainty of predictions about the size of the necessary technical infrastructure.
It should also be remembered that the purchase of the necessary hardware usually has to meet the performance expectations for the next 3 years. In addition, it must be taken into account ...
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