Thanks for reaching Q & A forum.
To keep the app always loaded, turn on the Always On setting in Basic and Standard service plans. Follow the steps below to change the Always On setting.
In Azure portal ->go to App Services -> from the left side -> Settings -> Select Configuration -> Select General settings -> For Always On, select On.
Refer below screenshot.
------
If this answers your query, do click Accept Answer
and Up-Vote for the same. And, if you have any further query do let us know.