ArcGIS Online StoryMaps are a specialized Web mapping application offered through Esri ArcGIS Online that allows you to tell a story by using a combination of text, images, videos, and interactive maps.
Learn to make you own StoryMaps: https://storymaps.arcgis.com/
Nine steps to great storytelling: https://storymaps.arcgis.com/stories/429bc4eed5f145109e603c9711a33407