We use Tableau server across the entire organization. All departments are using worksheets and data sources to answer day-to-day business decisions. It is our go-to business intelligence platform and is heavily used.
Suited Any type of BI, metrics, easy to use, fast, robust.
Not Suited This may start to cross over into general Tableau use itself, but we are always fighting using the right tool for the right job, we have tried to use tableau to adjust data much the way Alteryx or Tableau prep can be used.