Slack's messaging service sets sights on big businesses
[...] to traditional email, Slack works more like a social network, allowing employees to share their thoughts, updates, web links and documents in channels that can be viewed on a personal computer or smartphone.
Since its 2013 debut, Slack has emerged as a popular new way for teams of employees to communicate with each other, but those workers haven't been able to quickly connect with other departments within the same company to discuss projects or other issues.
Slack's early inroads in reshaping how workers communicate has minted the privately held company with a market value of $5 billion, based on the assessment of the venture capitalists and investors who have financed its growth so far.