Article Submission or Press Release? Which one is important?

according to me both have own quality ot rank your keyword thats y both are important

Article Submission would be better I think.

Article submission is more important , because anyone can do article submission for promotion work, but all cant do PR without specific announcement.

can anyone tell whats a press realese

Both are necessary and should be done when you promote a site. These are the ways to tell potential customers about your site.

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both are important

Both are equally important in search engine optimization to make quality traffic.

Press release gets more traffic, since it is the hardest to be accepted, but both are equally good for long term traffic