Global technology leader Slack Technologies is officially open for business in Australia with the launch of the company's new Asia Pacific headquarters in Carlton, located just outside the Melbourne city centre.

The Silicon Valley startup now has a market value of A$3.6 billion and is set to create 70 new jobs for Victoria's booming tech sector.

Slack's group messaging app is one of the fastest-growing business apps in the world.

In just two years Slack has accumulated more than 2.3 million daily active users, 675,000 paid Slack accounts and more than 369 employees.

And last November, the company chose Melbourne as the base from which to launch its expansion into Asia.

Slack was provided with key information on the local tech ecosystem, visas, workplace arrangements and introductions to professional services, by the Victorian Government Business Office (VGBO) in San Francisco and Invest Victoria.

In a post on the company's website today, Slack acknowledged Invest Victoria's assistance in making the decision to establish their Melbourne office.

They also highlighted Melbourne's culture of craftsmanship, the city's startup scene, and world-renowned coffee as key deciding factors.

coffee Image: courtesy of Slack co-founder Stewart Butterfield

The opening of Slack's Melbourne office follows recent moves by fellow tech titans Zendesk, Eventbrite, GoPro and Square to locate in Victoria.

According to the fDi Markets' report, Melbourne ranks second in the Asia Pacific region for the number of greenfields Software Headquarters set up in the last six years, behind only Singapore and ahead of Hong Kong and Sydney.

Victoria's tech industry now generates more than A$34 billion in annual revenue and employs more than 91,300 people across the state, with numbers primed to grow with demand for tech skills higher than ever before.

Melbourne alone produces more ICT graduates than any other Australian city.