The context is simply. I'd like to say technology helps museums extend the frontier of their outreach (services). It sounds a little bit awkward, but I think simply saying ''technology helps museums extend their outreach'' is not very emphatic. So I need your inputs.
Hello EnglishLearner1990. Although there is nothing grammatically wrong with your sentence, it sounds somehow "not quite right" - not the way a native would express that thought. May I suggest a few versions which seem to convey what I think the sense of your sentence is:
Technnology helps museums reach out to a wider audience
Technology helps museums extend their appeal to a wider public
Technology helps museums make their work more accessible to a broader section of society
I don't have a problem with "extend their outreach". It's a perfectly good word, despite its overuse by social service agencies. I think extending their outreach is a good thing for museums to be doing.