At the PDC Microsoft released the Sync Framework Power Pack for SQL Azure tool. It is a tool built on top of the Sync Framework 2.0 that provides a wizard to keep an on-premises and SQL Azure database in sync as well as a Visual Studio template where you can take a SQL Azure database offline using SQL Compact (or whatever they call it these days.) Lets take a look at the data sync wizard today and soon look at the Visual Studio template.
I started the wizard via Start|Microsoft Sync Framework|SQL Azure Data Sync Tool for SQL Server. The wizard works by taking a database that is on-premises and creating a new one in SQL Azure and creating the SQL Agent jobs to keep them in sync. I could not find out how to sync two identical databases that already exist. To get started you need to provide your SQL Azure credentials and then the name of the new database that you are going to create in SQL Azure.
After you provide your credentials for your local server and select a database, you have to select a database to sync with. The next screen shown here allows you to select the tables you want to keep in sync. You also get to choose who wins in a conflict, the local server or SQL Azure.
Next you get to choose the order of your sync. This is a very smart feature, you get to say sync in this order to avoid the classic order detail missing order id problem.
After you finish up the wizard, it will go ahead and create the new database in SQL Azure for you as well as the tables and associated tracking tables. It will also create the SQL Server Agent jobs required to keep the data in sync. I noticed that on my local server I did not have SQL Agent running, so no sync was performed and after the wizard ran I had no data. So I had to go into SQL Server Agent and enable it and change the default schedule of my job (which was daily at midnight.)
You may want to get more creative with the SQL Server Agent schedule depending on your environment, however, the Data Sync wizard is a handy tool to get you started.