Redfin is an internet-enabled real estate company that has pioneered a new way to buy and sell real estate by using software programs and machine learning to provide timely and relevant real estate information, automate many home-buying tasks, and help buyers find the right homes for them. Redfin facilitates home sales by more efficiently and conveniently connecting buyers and sellers, and takes a smaller commission for its service than regular real estate agencies. The company also employs a large team of real estate agents on a fixed annual salary with benefits, in contrast with traditional real estate businesses where agents effectively work as contractors and are compensated through commissions earned on each sale they make. Nowadays, Redfin also offers mortgages to buyers (traditionally offered by banks and brokers), data analysis for real estate agents (a totally new business), and an "iBuy" (instant buyer) service called RedfinNow where they buy homes directly and then resell them after making improvements to increase their market value (also called home "flipping").

Redfin's decision to use employee agents as opposed to agents who work as contractors is a choice with regard to its:
a. Vertical scope
b. Horizontal scope
c. Revenue model
d. Activities
e. Capabilities