Is it acceptable to cite an article from a corporate website? Can Wikipedia be used to prove credibility? I need relatively broad information on the functionality of a certain technology as part of the exposition to my seminar paper. As scholarly papers tend to focus on very specific questions, already taking the existence of my sought-for concepts for granted, and since suitable books don't seem available to me, I feel that I have to look for answers on a regular website.

For this, I've found a short article by a major corporation which happens to be the market leader of said technology. Is it acceptable to cite their web page in a seminar paper?

I understand that credibility of the used sources is a major concern. Given the fact they are market leader, I believe that credibility to be present. Do I need to name this company's status (e.g. "According to [company], market leader in [technology], ...") to validate the source? If so, would simply citing Wikipedia for this fact suffice, assuming their prevailing status on the market needs to be proven as well?
I agree with the answers posted here so far, but I want to add a few points.

You can realistically use any source in your paper, but it depends on how you use it. If you want to write about what X company says about a particular topic, then using that particular web article seems appropriate. If you want to write something informative about a particular product that X company happens to use, then citing that article (written by X company) is a less than ideal choice. As @Buffy mentioned, the company has a vested interest in portraying the product in a certain way, but as @Richard Erickson mentioned, this article (or Wikipedia) can be a good initial stepping stone.

Articles that you use for information need to be peer reviewed in order to have a high level of credibility. Not having access to books is not a valid excuse; universities have a plethora of resources for this exact circumstance. I recommend Inter Library Loan (ILL) for hard to get books and journal articles. Your professor may have suggestions on where to start.

tl;dr:


you can use anything as a source (even Wikipedia), but it depends on how it’s used
peer reviewed sources are best for research credibility
you can find obscure resources using your university’s library privileges
consult with your professor