  We investigate factoriality, Connes' type ${\rm III}$ invariants and fullness
of arbitrary amalgamated free product von Neumann algebras using Popa's
deformation/rigidity theory. Among other things, we generalize many previous
structural results on amalgamated free product von Neumann algebras and we
obtain new examples of full amalgamated free product factors for which we can
explicitely compute Connes' type ${\rm III}$ invariants.
