There is a vast difference between high volume and low volume recruiting.
Low volume recruting usually takes more time.
High volume recruiting's goal is to fill positions as quickly as possible.
In low volume recruiting a recruiter typically has a few positions to fill and there are only a few candidates.
In high volume recruiting there mutiple positions to fill and there are usually more than ample candidates.
Low volume positions typically pay a medium to high salary.
High volume positions typically pay low or entry level salaries.
Low volume recruiting generally is not automated.
High volume recruiting can be automated and treated almost like a turn key operation.