I'm currently considering moving away from using Tableau as my front end dash board technology. I've been using it for the last 4 years.

I'm very happy about the rapid development of impressive dashboards on almost any numerical data source but

• The possible layout of my dashboard very much depend on how my data source is structured

  • I'm very unhappy about sometimes meeting a wall where you just can't do what you find out is required after some iterations of the dashboard. At least not without starting all over again re-building the data source and redesigning the dashboard.

• I cannot build components that are tested, documented and reusable

  • Currently i'm only able to do manual testing. Thus when ever I change something I have to manually test all over again.

• I cannot efficiently do my ETL in Python and serve it via a REST API.

  • I most often end up in preparing the data source in MSSQL or directly in Tableau and this is costly to maintain.