"If you've got a company that wants to create an internal social network, everyone from the company [working on a particular issue] around the planet can form a circle," he said.
"One of the big challenges companies have is how to connect staff and share news and allow them to collaborate across geographies. Most companies need to get better at sharing intellectual property around internally and social networking actually does that incredibly well."
Google+ would also allow businesses to directly target different groups of customers and control what messages they sent to those in different circles, Leeder said.
The network's circles systems allow users to control and direct whom they share online information with.
Users can post a video or photo to other users in their friend circle, and those in work or family circles are unable to see it.
Alternatively, people can be sorted into multiple circles and posts can be shared with numerous circles at once.
Google+ for business follows the company's trend of offering a free, consumer version of a product and a premium version for commercial customers.
Google offers other applications for business including email, online word-processing, spreadsheet software and data storage.
"Gmail is a classic example where as a user you can get a free account but there are versions for business which are more developed and have added functionality and disk space and they come with a price," Leeder said.
New Zealand Post was one of Google's biggest local clients paying for its services.
