Personas are fictional characters that represent the ideal customers or users of a product or service. They help product teams understand and empathize with the needs, goals, and preferences of their target segments.
Personas can help define the features and benefit hypothesis of a product's strategic intent, which is the assumption that a certain set of features will deliver a specific benefit to the customers or users. By using personas, product teams can validate their feature and benefit hypothesis with real user feedback, and prioritize the features that deliver the most value and satisfaction to their personas.
References:
* Personas: This article from the Scaled Agile Framework explains the concept and purpose of personas, and how they can be used in a SAFe context to support customer-centricity, design thinking, and lean UX.
* Strategic Intent: This article from the Scaled Agile Framework defines the concept and components of strategic intent, and how it guides the portfolio vision, lean budget guardrails, and portfolio backlog.
* Feature and Benefit Hypothesis: This article from the Scaled Agile Framework describes the concept and process of feature and benefit hypothesis, and how it helps product teams test and validate their assumptions about customer value.

A roadmap is an artifact that shows the planned features and milestones for a solution over a timeline. It helps Product Managers communicate the vision and strategy to Product Owners and other stakeholders, and align them on the priorities and dependencies of the work. A roadmap also provides a feedback loop for validating assumptions and adapting to changing customer needs and market conditions.
References:
* SAFe Roadmap
* Product and Solution Management
* Product Owner

A value exchange pivot is a type of pivot that changes the way customers pay for the product or service, or the way the business generates revenue from the product or service. A value exchange pivot would indicate that customers want to pay in a different way, because it reflects a change in the customer preferences, behavior, or expectations regarding the payment method, frequency, or amount. For example, a business may pivot from a one-time purchase model to a subscription model, or from a fixed-price model to a pay-per-use model, based on the customer feedback and data.
References:
* Pivot: This article from the Scaled Agile Framework defines the concept and purpose of pivot, and how it helps to validate or invalidate the assumptions and hypotheses of a product or service using experiments and feedback.
* The 10 Types of Startup Pivots: This article from Forbes provides an overview of the 10 types of startup pivots, and how they can help entrepreneurs adapt and innovate in response to the market and customer needs. It also provides some examples of successful pivots by well-known companies.

Investment horizon 3 is the longest-term horizon that focuses on exploring and developing breakthrough innovations that can create new markets and revenue streams for the business. It is important for every business to allocate funding to investment horizon 3, because it enables the business to anticipate and respond to the changing customer needs, technological trends, and competitive threats, and to secure its future growth and survival. Investment horizon 3 requires a high level of creativity, experimentation, and risk tolerance, but it can also generate a high level of return and differentiation.
References:
* Horizon Planning: This article from the Scaled Agile Framework explains the concept and purpose of horizon planning, and describes the four horizons and their characteristics, challenges, and best practices.
* SAFe's investment horizon model - A synopsis: This article from Medium provides a summary of the SAFe investment horizon model, and illustrates how it can help organizations allocate their resources and manage their portfolio.
* Enduring Ideas: The three horizons of growth | McKinsey: This article from McKinsey presents the original framework of the three horizons of growth, and discusses how it can help businesses balance their current and future opportunities and challenges.