I still believe for enterprise development Microsoft is very viable so I don't see myself necessarily moving away from the platform.
At some level, you can't avoid having to upgrade to the latest and greatest Visual Studio but in some ways I am trying to move away from all Microsoft offerings. The biggest is on the database side. I think PostgreSQL running on a linux machine as a database is a very good solution. I would say at this point, this would be the biggest change. I also prefer to use http://www.llblgen.com/ for an ORM instead of Entity Framework.
I will tend to pick an open source equivalent for certain functionality instead of relying on Microsoft's version. For example, nunit for unit testing, log4net for logging, Quartz.NET for job scheduling, etc.
At some level, you can't avoid having to upgrade to the latest and greatest Visual Studio but in some ways I am trying to move away from all Microsoft offerings. The biggest is on the database side. I think PostgreSQL running on a linux machine as a database is a very good solution. I would say at this point, this would be the biggest change. I also prefer to use http://www.llblgen.com/ for an ORM instead of Entity Framework.
I will tend to pick an open source equivalent for certain functionality instead of relying on Microsoft's version. For example, nunit for unit testing, log4net for logging, Quartz.NET for job scheduling, etc.