Slack just taunted Microsoft with 'OK boomer' for running an ad campaign that looks almost exactly like one of Slack's WORK, MSFT

Get the Full StoryBrendan McDermid Reuters

Slack tweeted a video on Thursday with the caption "ok boomer," appearing to call out Microsoft for a suspiciously similar ad campaign to Slack's.

Slack and Microsoft Teams are two competing workplace chat services.

Microsoft just revealed it has more users than Slack, but Slack CEO Stewart Butterfield said that Microsoft views Slack as an "existential threat."

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Slack is leaning into its status as the young, hip startup by calling out its older, more established competition: Microsoft.

Slack tweeted a video on Thursday comparing a Slack ad and a Microsoft ad, showing the similarities between them and implying the Microsoft copied Slack's concept. The video was captioned "ok boomer," a phrase that has turned into a meme for millennials and Gen Z to voice their gripes with the baby boomer generation.See the rest of the story at Business InsiderNOW WATCH: How autopilot on an airplane worksSee Also:Apple just launched a new battery case for the iPhone 11 and 11 Pro, and it introduces a dedicated camera button for the first timeGoogle is adding the Gmail feature that helps write your emails for you to Google Docs, but you probably can't use it just yetHow to remove duplicates in Microsoft Excel to clean up data in individual or multiple columnsSEE ALSO: Amazon's Audible turned a historic deserted church into an 'Innovation Cathedral' but preserved its stained glass, pipe organ, and bowling alley

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