migrate db's - best way to mirror or replicate a full database I would like to mirror/replicate my databases to the cloud. The cloud is setup using VPN to my actual machine. 
I am a bit confused by the options I have and would like to get some light into it.
My setup is a SQL Server 2012 (standard edition) Instance which should be mirrored/replicated to a SQL server 2014 instance. The instance contains 30 databases which are in full recovery mode.

One other option would be to take a full backup, restore in cloud and later restore a differential one. But this might take some time. I would love the minimize the downtime that's why I thought about the replica/mirror way.

What are my options and riks at this point?
It sounds like you're trying to setup a disaster recovery environment, so that if your local machine blows-up you can switch over to the Azure machine.

There are a number of options, each with their own pros and cons. These are well documented elsewhere (see this link for an overview from Brent Ozar: http://www.brentozar.com/archive/2011/12/sql-server-high-availability-disaster-recovery-basics-webcast/). That said, you might want to look at Log Shipping and Asynchronous Database Mirroring particularly. 

Log shipping is an automated process for taking your log backups and restoring them on another server (e.g. Azure), you can take log backups every five minutes so that you're Azure server is always within about five minutes of your local machine. The upside is that it's easy to configure and can be setup through the SSMS GUI.

Database Mirroring takes this to the next level, constantly sending completed transactions to the other server (i.e. Azure) so that it's within a minute or so of your local machine (this depends on your network connection, of course).

There are other options but if you're new to disaster recovery but I'd recommend looking at these to start with.