Hello,
I am looking for the limitations in upgrading SP2010 to SP2013. I was going through some posts and I found that most of the customizations (code), designer level customizations and InfoPath forms cannot be upgraded AS IS by the upgradation process and behaviour of 2013 is somewhat different.
I need some help in finding what can be upgraded AS IS like all OOB features, what level of designer customization and InfoPath as well.