A SAFe Portfolio is a collection of what?

According to SAFe, a SAFe Portfolio is a set of value streams that delivers a continuous flow of valuable solutions to customers within a common funding and governance model. A SAFe portfolio aligns strategy to execution via a collection of Development Value Streams (DVS). Each DVS develops one or more Solutions necessary for the portfolio to accomplish its business mission and vision, operating under a shared governance model1. A DVS is a long-lived series of steps that an organization uses to deliver value to a customer or stakeholder2. A DVS can be internal or external, and it can span multiple ARTs and suppliers3. A DVS is not the same as a functional team, a solution, or a business unit, which are different ways of organizing work, products, or organizational structures. References: Portfolio - Scaled Agile Framework, Development Value Stream - Scaled Agile Framework, Value Stream - Scaled Agile Framework.