Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
Alteryx flows (existing or new) can easily be sent to Strategy Dossiers and Dashboards through Strategy In-Memory Cubes.
Prerequisites:
Setup:
The video above uses the a very simple Python script, that only requires to be attached at the end of an Alteryx Flow inside a "Python" object:

Once the empty Python object is added, click on it to show the underlying Notebook

If more "In [ ]:" sections are available, get rid of these using the Cut Scissors icon
Then paste the following (also attached below) python script: https://github.com/hchadeisson/mstr-alteryx-python

Update all the "mstr_*" variables in the script according to your own Strategy environment
Finally, click the
button
Once the flow is done running, you should see the newly created dataset named after mstr_dataset_name variable, under My Reports, in the project defined in mstr_project_name variable