In general, the performance of successful delivery is directly related to the effectiveness of the planning phase. Unfortunately, many IT teams are not patient and do not take the adequate time to have the thorough plan to achieve the requested goals. The lack of planning usually results in an untimely delivery of the solution, improper scope or objective delivered, and overspending the agreed cost/budget.
Most plans of successful projects had realistic milestones with unrealistic timeline; or they’ll use outdated planning model that has nothing to do with today’s business environment. IT delivery plans need to match with current business unit’s trends, organizational objectives, as well as the end users’ needs. If they don’t, the project will quickly be doomed to fail.