4. ELT(extract, transform and
load)
• Extract: to remove an object from somewhere,
especially with difficulty.
• Transform: to completely change the
appearance, form, or character of something or
someone, especially in a way that improves it.
• Load: to put a program into a computer, or to
be put into a computer.
5. SSL(secure socket layer)
• to send and receive the data that is done
encryption.
• To prevent virus, manipulation and etc.
8. Amazon tools, Marketing
and Community
• Recommendation system: Recommend the
similar and related to what you ve searched.
• gift-giving recommendation: to gather a lot of
data you buy for your friend etc.