Upwind raises $400 million after turning down Datadog takeover

Cloud security startup Upwind has raised a $400 million Series C at a $3.8 billion valuation, led by Bessemer Venture Partners, after rejecting an acquisition approach from Datadog that offered no premium over that price. The four-year-old San Francisco firm raised $250 million at a $1.5 billion valuation just nine months ago and expects roughly $90 million ARR this year.