What are LDP-MPLS advantages? An LDP-MPLS is deployed on a network and labels are used for packet forwarding. As you may know, LDP needs IGP and there is IGP too. Because there is no RSVP, there is no traffic engineering and there is no bandwidth reservation. Rather than "locally" looking-up tables which reduces the look-up process load for packet forwarding (and I think this look-up process is no load for today routers), What are other advantages for using LDP-MPLS? In comparison to using just IGP like OSPF for the network. P.S. This link didn't help.

In todays routers routing lookup is done in hardware, usually in TCAM, which is as fast as ILM lookup. So no advantage in lookup speed. So why is it even needed? For tunneling. If you want to deploy a full-mesh of tunnels dynamically between routers (usually PE routers) you can use LDP. This provides infrastructure for services like L3VPN, L2VPN etc.