shelf – n. a flat object which is connected to a wall, and on which other objects can be placed

retail – n. the business of selling things directly to customers for their own use

chain – n. a group of stores or businesses owned by the same company

according – adv. as stated by or in

artificial intelligence – n. the development of computers with the ability to do things that normally require human intelligence

scope – n. the area that is included in or dealt with by something

scale – n. the size or level of something especially in comparison to something else

era – n. a long time or period of history

rapidly – adj. very quickly

impact – v. to have a strong effect on someone or something