The world’s biggest technology show, Germany's CeBIT, is increasingly setting its sights growing tech regions Asia and Africa, say organisers.

More than 4,000 exhibitors from almost 70 countries are to start attending the show today in the northern German city of Hanover.

CeBIT caters to the who information technology sector, with firms such as IBM, Microsoft, SAP and Google present at this year’s event.

And CeBIT is becoming more global, say show organisers.

“CeBIT is becoming increasingly international as we see countries in Asia and Africa developing more and more into IT nations,” said Hartwig von Sass, a spokesman for CeBit organisers Deutsche Messe.

CeBIT is bigger than the Consumer Electronics Show in Las Vegas and the Mobile World Congress in Barcelona, says Sass.

“No matter what other fair you look at, they’re all half as big as us,” said Sass in an AFP report.

Sass said 350,000 visitors attended CeBIT last year.

This year’s CeBIT theme is 'shareconomy': the increasing trend of users sharing data and things, with examples being “carsharing” and social media websites such as Facebook, Twitter and Instagram.