Best Practice for Creating Custom Application in SharePoint Online & Sample?
May I know what is the best practise for me to have Custom Application Deploy in SharePoint Online? For example, Vehicle/Room/Asset Booking System, Custom Leave/HR Application, Custom Claim form etc.. Any steps / guide for me to follow? Any sample working source to start with ?(I've already done the Hello World WebPart tutorial).
Normally I just found small application like in github (spfx-40-fantastics web parts). What I'm looking for a complete example simple system that run properly in modern site of SharePoint Online. Hope to get feedback from all you guys. Thanks.