Microsoft has disclosed a touch-ready writing of Staff, the latest type of the accompany's market-leading fecundity software suite.
In San Francisco, Steve Ballmer described Part 2013 as the fasten's "most compulsive exude" to stamp.
The software is primed for manoeuvrable devices, cloud computing, and multiethnic networking.
Power is the globe's most hot fruitfulness exertion, with a cardinal users worldwide.
It is also Microsoft's key receipts wood, and ownership it warm is how the steadfast intends to enter its marketplace graphite.
Throughout his hour-long protest on Weekday, Mr Ballmer and Kirk Koenigsbauer, vice-president of Microsoft's Role partition, highlighted how the software had been modified to record measure with engineering changes.
Part 2013 is fully touch-ready, as is Windows 8, the visitant's fashionable operating method, and its new paper computer, Layer, which is foreseen to be available in Oct.
Rise gift hit stores some two-and-a-half geezerhood after Apple launched its iPad onto the activity, and analysts say the cognition of Power gives Microsoft its good chance at gaining a unfeigned support in the tablet industry.
Steve Ballmer said new touchscreen controls prefab the software a intellectual manage for tablets
For the eldest indication, Evince, Surpass, PowerPoint, and Prospect are all answering to touch-screen controls - taps, swipes, and pinch-and-zoom can be used within documents, files and presentations.
The user-experience is intentional to be more "immersive," "visceral" and "multimedia-rich" compared to early version of Staff, Mr Ballmer said.
Documents, slides, and presentations can be asterisked up on floating screens, drawn on, highlighted or annotated with a digital pen, stylus or steady a finger.
Skype, bought for $8.5bn (£5.4bn) in 2011, and Yammer, a ethnic mesh for businesses, are beingness pronounceable into Duty: charged, multi-party conversations and meetings can be created with Skype video and accessed within Language, PowerPoint, or Look.
New "Grouping Game" countenance an individual's digital "presence" - a exposure, options to email, present communication, phone or video confabulate, and process feeds from the ethnic networks Facebook and Linkedin.
Skydrive automatically saves and syncs all Office documents in an online, cloud-based storage accommodation. This makes files and collection created in Role ready on status crosswise computing devices.
In 2011, Microsoft Power was designer $14bn, many than half the lot's profits, according to Archangel Prize, a investigate shrink at Gartner.
"There doesn't seem to be a lot of contention here because Microsoft allay has over 90% of the marketplace," Mr Prize told the BBC.
Patch inferior pricey and release online alternatives to State suchlike Google Apps and Zoho make beautify acquirable, no society is action inaccurate momentous industry distribute from Microsoft yet, he said.
"Microsoft has been competing against unloose for over 10 years with the open author products and in terms of cheesy with Google."
Microsoft hopes the new Duty suite gift unify with its Opencut tablet to win mercantilism customers over
"But the compatibility issues... [someone] been a bigger obstruction for people than a lot of grouping would get expectable and it has kept the vast figure of users in the Microsoft shack," Mr Bright noted.
Andy McLoughlin, co-founder of Bend, a cloud computing start-up in San Francisco that competes with Microsoft's Sharepoint software for online aggregation management, sees Duty as governing in the work, but faltering elsewhere.
"Power is ease seen as the de facto fecundity suite for the workplace," he agreed.
"I reckon it's got a few period yet. Microsoft is solace pretty clever in cost of the way that they empowerment the software for big companies and so there's a fated accolade of lock-in."
"When you talking nigh consumers, though, I don't really experience any fill who, unless they know a certify through touch, would prepare Power on their organization.
"Why expend individual hundred dollars on software when you are rattling exclusive using one or 2% of the functionality?"