  Earned duration management (EDM) is a methodology for project schedule
management (PSM) that can be considered an alternative to earned value
management (EVM). EDM provides an estimation of deviations in schedule and a
final project duration estimation. There is a key difference between EDM and
EVM: In EDM, the value of activities is expressed as work periods; whereas in
EVM, value is expressed in terms of cost. In this paper, we present how EDM can
be applied to monitor and control stochastic projects. To explain the
methodology, we use a real case study with a project that presents a high level
of uncertainty and activities with random durations. We analyze the usability
of this approach according to the activities network topology and compare the
EVM and earned schedule methodology (ESM) for PSM.
