Define the construct of the Agile methodology and distinguish it in the context of project management

Emergent trends in project management transcend the traditional or predictive project life cycle, demanding more flexibility and adaptability. Examine the Agile method for project management (Agile PM) by addressing the following key elements:

• First, in your own words, with appropriate support, define the construct of the Agile methodology and distinguish it in the context of project management.
• Then identify one of the key aspects of the Agile methodology used in project management and rationalize its use in a specific project scenario.

A substantive initial post addresses all the key topic elements using approximately 150-200 words. Reference at least one source from among the required or recommended readings and at least one credible outside source (a scholarly reference other than the textbook or readings).