Provides the Layer 2 switching and the Layer 3 routing
It is one device instead of separate Router and Switch

They are always Managed Switches
HSRP protocol can be configured on Layer 3 Switches

L3 switches support creation of SVIs (Switch Virtual Interfaces)
SVIs setup default gateway for each VLAN
Because of this traffic can be routed between VLANs

Not recommended in very large networks as dedicated routes are faster and more efficient