>What's the benefit of
>
>

>var customer = new Customer();
>

>
>as opposed to
>
>

>Customer customer = new Customer();
>

Most of the time the type can be inferred from the right side. In those cases var is a keyword meaning the inferred type. One big advantage is that if sometimes you are unsure about the type (but it can be inferred) then you use "var" then hover your cursor on var to see the inferred type. You are free to type the type yourself or let it be inferred.
Cetin