Adapting computer networks

According to one embodiment of the present invention, there is provided a method of analysing a computer infrastructure providing a service, an intended quality level of the service being defined by at least one service level objective defining a service level quality objective and a related compliance level, the computer infrastructure comprising a plurality of components, the method comprising: obtaining first service level objective compliance data for a selected service level objective, the compliance data being calculated using data collected from the computer infrastructure; calculating second service level objective compliance data for the selected service level objective using in part the collected data and for a selected service level quality objective a value that meets that objective; calculating a difference between the first and second data; and identifying, based on the calculated difference, one or more components suitable for modification.