Hi

I'm seeking what approach is best for upgrading SD application server from Windows 2008 Server to either 2012 or 2016.  At this stage We keep existing SQL server ( Separate server) as is also that will be a next to go through) . 

I could do in place to 2012 then 2016 but this may be little time consuming and more risk for testing in between,  But is is possible to be scheduled those steps..    

I can also deploy new clean server side by side to install application.  

In this case;

Install new instance of SD with same service pack level on new server. ( different database name for temporary)

Stop old SD

Use changeDBServer,bat to reconnect old database

change DNS to transfer same URL that used for old server to new 

Do we have to do anything else , what about SSL cert?   

Thanks in advance