Timeline Visual for portfolio milestones
Create a timeline visualization that can show all activities from a portfolio of projects with many different icons and ability to change color scheme for each portfolio type and have the ability to highlight key activities/dates by a specific time and/or project while still seeing the full picture of activities.
Jukka Karo commented
The Gantt visualization can be used to show a timeline of a project portfolio. E.g. using Project Online data, insert Project Name to the Task field, ProjectStartDate to Start Date field, and ProjectDuration to Duration field.
Please enhance this simple project portfolio timeline by adding rolled-up information like milestones and project phases (summary tasks) in different colors based on milestone or summary task field values.