Easy in all ways: - plain HTML + JS + CSS to start with, then add some simple framework like Bootstrap + Datatables for quick results - MS SQL Express Edition o

Easy in all ways: - plain HTML + JS + CSS to start with, then add some simple framework like Bootstrap + Datatables for quick results - MS SQL Express Edition or Developer Edition as backend; it has the easiest GUI-driven installation, configuration and operation (via SQL Server Management Studio) while it is still completely free - server side programming ... not sure, for me PHP is the simplest, but this is based on a very limited view over all options. PHP is very simple because you can just use Notepad++ or VS Code to edit files, save, run - no build, no dependencies. You can run it under Windows (IIS) or Linux, configuration is minimal.