"It's a piece of cake," Spatz joked in his presentation at this year's HP software forum in Sydney this week. "It's such a complicated environment. Think about the political environment, not just the infrastructure challenges."

Spatz, who is based in New York, said since Unicef has a "long-term presence", it needs to make changes sustainable, and that's what makes infrastructure "critical."

Unicef is part of the United Nations but not funded by it. Instead, two-thirds of Unicef's budget comes from voluntary sources, and the remainder from the private sector.

With about 85 percent of the staff in the field and the rest in its headquarters, Unicef has "quite a challenge delivering services for children."

"We're running global infrastructure and everyone has the same wherever they are," Spatz said. "We have servers, desktops, a global helpdesk, SAP at core, and a custom-built system for running field [operations]. This is on an IP-only global network with QoS and we have deployed VOIP in more than 150 locations for over two years. Who said VOIP isn't ready?"