Note the declarative approach: you specify what to do with the elements and the processor (through its built-in tree walking logic) decides when to apply a template.

Using standard message flow manipulation logic, the value at the tree location could be defined statically, computed from message content, or even derived from an external source.

Because the XSLT processing model is "write-once, read-many," the synchronization logic can be much simpler, leading to faster navigation of the tree.