Synchronous- code is executed in sequence, each statement waits for the previous statement to finish before executing.
Asynchronous- code doesn’t have to wait, your program can continue to run. You do this to keep your site or app responsive, reducing waiting time for the user.
When you want to speed up a process in Ninox you can use “do as server” code. If you want to wait for the result (synchronous) then save the result in a variable then you can use the result in the following lines of code. Ex: