The document discusses different project management styles and tools. It describes Waterfall project management as utilizing a traditional top-down approach to define scope, budgets, and schedules upfront. Agile project management is performed in stages by teams of 5-20 people and can scale to multiple teams. PSA focuses on project management for services industries, while PPM manages multiple projects across an enterprise to optimize resources and goals. The document also provides a table comparing costs of various project management applications.