Discussing about the Business Environment focusing on external entities. In here specifically identify what is the difference between customer-supplier relationship and business partner relationship. Talking about the nature of business interactions among both the internal and external parties of an organization. The success factors of an perfect interaction in a business process. Three flows in the interaction, and how technology had impact these flows. And how the jargon had been changed. Depending on the level of digitization how the business organizations were categorized. And finally the step by step roadmap for an successful ebusiness.