The fourth edition of The World Congress of News Agencies was held in the Saudi capital under the theme: "Reinventing the news agency in the 21st century."
Previous meetings took place in Russia in 2004, Spain in 2007 and Argentina in 2010.
Speakers emphasised how the proliferation of online news and mobile services has transformed a business once dominated by newspapers tied to evening deadlines.
As the competition has increased, the global economic crisis has caused subscription rates to plummet, with cash-strapped users having instead turned to social networks, online news aggregators and free news websites.
Hoog insisted he was "optimistic" despite the crisis, and emphasised the importance of knitting together text, photo and video into a seamless and web-friendly platform.
Abdullah al-Hussein, head of the official Saudi Press Agency SPA, said he hoped the conference would be a "milestone in cooperation between news agencies in the field of exchange of experience and expertise.