What is meaning of client servicing?

What is meaning of client servicing?
A Google search of the term "client services" yielded over 67 million results. The term is getting a lot of play in the business environment, yet it it is not specifically defined in Webster's Dictionary.
Webster's Dictionary defines "client" as "a dependent" and "service," as "the act of serving." The common usages of the term, "client services," seems almost endless