After planning phase I think execution phase is one of the most important phases in a project life cycle. It is actually executing the project as it is all about deliverables and outputs. It is the longest and most consuming phase in terms of energy and resources. Bad source selection or no cordial relationship with the vendors will cause problems in execution. Execution phase is the phase where deliverables are constructed and are presented to the customers and stakeholders. It is the longest phase in project life cycle. The purpose of the execution phase is to complete the work defined in the planning phase and meeting the key objectives of the project. It involves managing the team, regular follow up, communicating information to the stakeholders and team members.