Which of the following defines 'revenue streams' in a business model canvas?

Revenue streams in a business model canvas refer specifically to the various sources from which a business earns money from its customers. This concept encompasses the different ways a business generates income, such as through sales of products or services, subscription fees, licensing, or any other method that contributes to the business's overall revenue.

When focusing on revenue generated from different customer segments, it highlights the importance of understanding which segments of the customer base contribute to revenue and how they do so. This allows businesses to analyze market demands, tailor offerings, and identify opportunities for growth based on customer behavior and preferences. Identifying and optimizing these revenue streams is essential for financial sustainability and strategic planning in the business model.

The other options revolve around different aspects of a business model canvas. Channels deal with how products or services reach customers, partnerships pertain to relationships that enhance offerings or capabilities, and costs reflect the financial outlay necessary for operations. While these elements are integral to a business model, they do not define revenue streams, which are specifically focused on the income aspect of the business.