The missing word is Outsourcing. Shell Oil Company outsourced Human Resources Analytics Services to Caleb Brett.
Outsourcing is the process of asking another firm to carry out a business activity that would have been otherwise, executed by the company's staff internally.
Human Resources Analytics is the collation of all data that relate to the staff of an organization for use in effective and efficient decision-making.
See the link below for more about Outsourcing:
https://brainly.com/question/4456416