Answer:
Most of the successful campaigns or advertisements have a catchy slogan which summarizes the products distinctive features. Effective campaigns and ads also need to show changes or change in behavior per-say for increases in revenue. That makes the advertisement effective.
Example of a well-done advertisement:
A website for example advertises on a more popular website. Now, Instagram has over 10 mil. + users. Meaning over 1 mil + people are going to see that ad. That would make people interested in the website.
Sorry, for ANY grammar mistakes , I hope this helps!
( This was just MY personal opinion of a well-done advertisement. )
