I have two site collections (A and B) belonging to the same content database. Inside site collection A there is a list "List1".. now i want to have the same list in the site collection B such - if there are any changes made to the list 1 in site collection A the same changes should b reflected in list1 inside site collection B - is this possible?
You can do it many ways:
Steps 2 & 3 will give control to users for manually syncying at anytime
What kind of changes are we talking about?
If by changes you mean syncing of items, then you can simply write Item Receivers on List A for the
Here is a comprehensive guide on writing event receivers: