Premium Feature Data Store
Increase your ArcGIS Online subscription feature data storage and support for intensive query, edit, analysis, and extract, transform, and load (ETL) with one of three Premium Feature Data Store levels.
Each level provides twice the power of the previous, with the highest level (M4) offering 16 times the compute available with Standard Feature Data Store.
Each ArcGIS Online subscription has only one feature data store; these levels cannot be combined.