It's obvious that the top-level domain .systems can be extensively applied to any activity in the tech field. However, apart from being a “must have” for all businesses working in the area of engineering and information technology, the word “systems” is increasingly being used in a larger sense by businesses and groups that operate outside the tech field, but want to convey the idea of a structured and well defined business project.
Discover the services dedicated to the trademark owners, such as the Trademark Clearinghouse - TMCH (the only global database of registered brands authorized by ICANN), or the Domains Protected Marks List - DPML (block of the registrations of similar/equivalent domains of your brand in over than 200 of the new extensions).