"[...] the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.’’ (1)
In simpler terms, marketing is identifying who your buyers will be and making a connection to them, and it also covers all the actions you carry out to get to that place.
Advertising is to get your product known. Marketing is selling it to your customers.
Advertising is trying different things to let your product presence be acknowledged, and often through different campaigns. Marketing is building strong relationships through your brand with your market, advertising is getting your market aware of your brand.
"[...] is the function that links the consumer, customer, and public to the marketer through information--information used to identify and define marketing opportunities and problems; generate, refine, and evaluate marketing actions; monitor marketing performance; and improve understanding of marketing as a process.(2)
Businesses, at their core, survive because they make money. Money to grown with, money to live on, money to keep going.
Businesses grow out of the seed of an idea.
Then the Internet happened.
People started thinking of old things applied new ways.
What if we can sell stuff online, like, an online mall or something ?
What if we make a place online to upload and show videos?
What if we set it up so people can buy, sell and bid online?