Multiple DashBoard based on the same dataset

hi BigLo - Yes, the most optimal approach would be: 

Step 1: To create a Dataset file and publish the same to Power BI Service. 

Step 2: Following this you can use Power BI Datasets as a source and connect to the dataset published as part of Step 1

Step 3: Any further model changes - table, measures, calculations will have to be made in the dataset created as part of Step 1

Step 4: All reports connecting to this dataset will automatically see the changes to the underlying dataset - no additional changes / updates are required in the reports 

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