Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
The Revenue Stream describes how a company will generate cash from each Customer Segment. The Revenue Stream has to take into account how much customers will be willing to pay for the value the company delivers. There are two basic types of revenue stream: revenues from one-time customer payments, and recurring revenues from on-going payments.