What is the role of sales and operations planning in organizational performances? Explain the role of aggregate planning in a supply chain.

Please view the following videos:

Sales & Operations Planning – Thomas Holm, Implement Consulting Group:

http://www.youtube.com/watch?v=0j0iDaAdhD4

Sales & Operations Planning Video – funny:

https://www.youtube.com/watch?v=qo0g_YUOBKc

Sales and Operations Planning Overview:

http://www.youtube.com/watch?v=V86gJywBKBI

What is the role of sales and operations planning in organizational performances?

Explain the role of aggregate planning in a supply chain.

Please ensure to write a post which is a minimum of 500 words, please ensure to provide at least two peer reviewed journal articles.