Margie has worked to improve her company's e$-$commerce site, and has particularly been focused on investing in the technological infrastructure of the organization so that the images, content, and functionality of the website all work $24/7,$ and do so efficiently. It would appear that she has been particularly invested in integrating $($a$)\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ to improve her e$-$commerce site.

Group of answer choices

value$-$added incentives

brand engagement

consistent customer experience

mobile$-$optimized design

search engine optimization