The ART Planning Board is a crucial artifact created and used during the PI Planning event. Its primary purpose is to provide a visual representation of the plan for the upcoming Program Increment. It highlights the sequence of feature delivery, dependencies among the different Agile teams on the Agile Release Train (ART), and any relevant milestones. This visualization is essential for teams to identify and negotiate dependencies, align on the plan, and ensure a shared understanding of the work to be accomplished.

A. ART PI Kanban Board: This board is used to visualize and manage the flow of Features from the backlog through implementation, not for creating the detailed, iteration-by-iteration plan during the PI Planning event.

C. ART PI Risks: This is a list or register of identified risks that are addressed during PI Planning (using the ROAM technique). It visualizes potential problems, not the planned work itself.

D. ART PI Objectives: These are written statements that summarize the business and technical goals a team or train intends to achieve. They represent the value and outcome of the work, not the visual plan of the work and its dependencies.

1. Scaled Agile, Inc. (2023). PI Planning. Scaled Agile Framework. Retrieved from https://www.scaledagileframework.com/pi-planning/. In the section "Outputs of PI Planning," the article states, "The ART planning board, which highlights the new feature delivery dates, feature dependencies among teams, and relevant Milestones." The article also features multiple images of the board being used during the event.

2. Scaled Agile, Inc. (2023). ART Flow. Scaled Agile Framework. Retrieved from https://www.scaledagileframework.com/art-flow/. This article describes the ART Kanban as the tool to manage the flow of work (Features) but distinguishes it from the ART Planning Board used specifically within the PI Planning event to map out the plan.