Explanation/Reference:
Explanation:
6.6.2.2 Critical Path Method
The critical path method, which is a method used to estimate the minimum project duration and determine the amount of scheduling flexibility on the logical network paths within the schedule model.
6.6.2.3 Critical Chain Method
The critical chain method (CCM) is a schedule method that allows the project team to place buffers on any project schedule path to account for limited resources and project uncertainties. It is developed from the critical path method approach and considers the effects of resource allocation, resource optimization, resource leveling, and activity duration uncertainty on the critical path determined using the critical path method. To do so, the critical chain method introduces the concept of buffers and buffer management. The critical chain method uses activities with durations that do not include safety margins, logical relationships, and resource availability with statistically determined buffers composed of the aggregated safety margins of activities at specified points on the project schedule path to account for limited resources and project uncertainties. The resource-constrained critical path is known as the critical chain.

Explanation/Reference:
Explanation:
2.1.5 Enterprise Environmental Factors
Enterprise environmental factors refer to conditions, not under the control of the project team, that influence, constrain, or direct the project. Enterprise environmental factors are considered inputs to most planning processes, may enhance or constrain project management options, and may have a positive or negative influence on the outcome.
Enterprise environmental factors vary widely in type or nature. Enterprise environmental factors include, but are not limited to:
Organizational culture, structure, and governance;

Geographic distribution of facilities and resources;

Government or industry standards (e.g., regulatory agency regulations, codes of conduct, product

standards, quality standards, and workmanship standards);
Infrastructure (e.g., existing facilities and capital equipment);

Existing human resources (e.g., skills, disciplines, and knowledge, such as design, development, legal,

contracting, and purchasing);
Personnel administration (e.g., staffing and retention guidelines, employee performance reviews and

training records, reward and overtime policy, and time tracking);
Company work authorization systems;

Marketplace conditions;

Stakeholder risk tolerances;

Political climate;

Organization's established communications channels;

Commercial databases (e.g., standardized cost estimating data, industry risk study information, and risk

databases); and
Project management information system (e.g., an automated tool, such as a scheduling software tool, a

configuration management system, and
Project management information system (e.g., an automated tool, such as a scheduling software tool, a

configuration management system, an information collection and distribution system, or web interfaces to other online automated systems).