All businesses and charities will have occasion to help people become aware of their organizations and their offerings.
One of the means that organizations have traditionally used are press releases.* But there are many other ways to get publicity – the articles below from Entrepreneur have a lot of good advice on other ways to get noticed.
Definition:A public relations announcement issued to the news media and other targeted publications for the purpose of letting the public know of company developments. [Source is from Entrepeneur Small Business Encycopedia]
And here are some articles from Entrepeneur about press releases and alternatives:
Is Sending Out a Press Release Really Worth the Money?
The press release industry generates a lot of money-but it might not hold any value for your business. Josh Sternberg, November 30, 2017.
4 Ways to Get Publicity on a Budget, Chris Myers, March 17, 2015.
12 Ways to Land Media Coverage Without a Press Release, Renee Warren, July 18, 2016.
Each of these articles has links to other Entrepeneur articles on the subject. And to get [many] more articles on the subject just put in “press release” or something related to the topic in the search box.