Production can be expensive, but at this point , you should be seeing revenue.

what if the planned schedule differes from the current progress?

This is phase where all the plans are put to motion.

Production is the goals that we meet our clients.

production the finishing line in any products

Though production stage is the most expensive part of a project,resource use can be monitored to avoid a budget blowout.Controlling can also be done at this stage and a completion of activities is also at this stage

During this phase the plan is put into operation. It ought to provide a completed project, ready to be 'handed over to' clients. Alternatively, it may end in a full implementation, i.e. at the end of an internal organisational project.

This phase is the implementation phase and financially consuming. Many considered this as the doing phase and it’s when the project can be seen by the public, and for them it looks like the project has just started, therefore it is important to keep the momentum.

Information Technology -> Project management methodology: phase 3 - production Phase 3: Production During this phase the plan is put into operation. It ought to provide a completed project, ready to be 'handed over to' clients. Alternatively, it may end in a full implementation, i.e. at the end of an internal organisational project. This phase involves: Providing the resources Completing the activities Monitoring, controlling and recording the progress of the project on the GANTT chart Comparing the current progress to the planned schedule Updating and refining the schedule as required Monitoring resource use to ensure no budgetary blowout Ensuring milestones and overall goals are met

This phase is where the plan is put in motion, that is resources are provided and tasks completed.