Strategic workforce planning is the first component of HRM strategy and forms the basis for all other HR activities. It involves proactively anticipating future HR needs in light of current capabilities and responding flexibly to changing requirements. The key objectives are to ensure the right employees with the right skills are in the right places at the right times and that the organization can respond to environmental changes. There are two main types of planning: aggregate planning which anticipates groups of employees needed for lower level jobs and skills, and succession planning which focuses on ensuring critical management positions remain filled with the best candidates. Effective succession planning is tied to organizational strategy and monitors progress and outcomes.