Webb, 26, was among the biggest surprises on the Ravens' defense last season. Injuries to Domonique Foxworth and Chris Carr pushed Webb into the starting lineup during training camp and he ended up being one of the top cornerbacks in the AFC North.
"Lardarius is an important player for the Ravens, and we're happy he will be with us for a long time," general manager Ozzie Newsome said a statement.
A third-round pick by the Ravens in 2009, Webb was a restricted free agent this year and had received a first-round tender ($2.74 million).
I will blog more of my reaction to this signing shortly.