Facbook pixel from two sites, is it possible?

Question

Facebook

A question.
There are 2 sites. One online store, the second blog. I want to collect data from the blog and advertise products for them from the online store. The topics of interests of both sites are the same.
How best to set up a pixel. Put one pixel on 2 sites or a different pixel for each site?
Thank you!

Answer 1

It is very easy to divide the audience of the same pixel into domains or subdomains in custom audiences, so use one pixel and you will be happy)
ps It is desirable that the topics are similar