In which document would you expect to see an overview of actual service achievements against targets?

An operational level agreement (OLA) defines internal support commitments between teams but does not report on actual performance achievements.

A capacity plan documents future resource requirements and forecasts, not a comparison of actual service achievements against SLA targets.

An SLA documents the agreed service level targets themselves but does not record or display actual performance measurements against those targets.

A SLAM chart is specifically designed to display SLA performance data over time, typically using color coding (such as red, amber, green) to show whether each service metric is meeting, approaching, or breaching its agreed target. It is produced as part of the service level management process and is used in service review meetings to assess actual versus agreed performance.