It depends on the institution. For instance, in Europe and in north America, they do count the conference papers if the corresponding conference is scientifically well known, where the managing committee members are serious researchers. However, you can find in some quality imitators institutions a system that does not count conference papers by definition, which means that they might not count a paper published in top and difficult and dedicated conference just because it is a conference and not a journal paper.
Conference papers are not considered as publications by majority of the Institutes and it is correct according to me.
Most of these presentations can be published in full manuscripts in international peer-reviewed journals. As a matter of fact, I would propose that all those journals who have come up in recent years and those who ask you to pay for publication as open access journals, should not be counted as journal publications. Journal publications has been made a business also to exploit the requirements of some of the Institutions. Thus it is the right approach as not to consider conference publications as journal publications. Another reason is that in majority of the Conferences, the abstracts are accepted without any serious consideration.
I am writing these comments based on 43 years of experience.
Papers of a particular conference can be published as proceedings of a particular journal but they individually don't count as publication. Some conferences select the best papers and send it to journal for publication wherein the review process will be done by journal reviewers.