A user interface accepts a model of a proposed system solution for a service assurance system. A Dimensioning Engine receives the solution and determines dimensions for the solution. The dimensions specify any of: a quantity of CPUs, a rating for the quantity of CPUs, an amount of disk storage, a memory requirement, or a CPU processing parameter. A Dimensioning Model Manager stores data from equipment and product vendors to determine the solution by taking into account specific characteristics of an equipment or a product to be used in the service assurance system. A Dimensioning Monitor (DM) monitors the model of the solution against events occurring in the service assurance system. The DM transmits an alert if the service assurance system underperforms or overperforms with reference to the model. The DM determines changes to the model into line with a current set of operational conditions, or updates the dimensions.