Share contact lists of employees,customers,contractors,and suppliers

A) cloud computing
B) Click-to-Run
C) Office on Demand
D) Exchange Online
E) Active Directory Synchronization
F) instant messaging
G) Lync
H) SharePoint Calendar
I) SharePoint Task List
J) SharePoint Contacts List

_________ are the costs, in money and time, imposed by a decision to buy elsewhere.

A) Entry barriers
B) Loyalty programs
C) Substitute products
D) Switching costs