The document discusses developing partnerships as part of a startup's business model and business development efforts. It recommends defining your business model using a business model canvas framework to clarify your value proposition, partnership model, revenue streams, and costs. This helps show how the business works, why it needs funding, where to invest funds, and which partners to work with. The document provides an example of Twitter's business model canvas and discusses key steps to executing partnerships, including defining your model, clarifying partner value, selecting targets, engaging partners, and closing deals. Evaluation tools discussed include value chain analysis, customer acquisition cost analysis, and customer lifetime value analysis.