Just wondering: let's say I have a website, and I want do to retargeting (remarketing) to its visitors by showing them ads about my website, whenever these visitors visit their Facebook account.
I have 2 options for the retargeting:
a. Putting Facebook pixel on my website, so that people will see ads of my website when they go to Facebook
b. Putting PerfectAudience (or any other 3rd party retargeting platforms) pixel on my website, so that people will see ads on my website when they go to Facebook
Which one is the better way? a or b? What are the advantages and disadvantages of each method?