Salesforce has completed its $27.7 billion acquisition of Slack, combining the leading CRM platform with one of the leading messaging platforms.

The two companies announced in December they had reached a deal for Salesforce to acquire Slack. The deal was seen as a way for both companies to better compete with Microsoft. Microsoft Teams had eclipsed Slack, in terms of user count, thanks in large part to being part of Microsoft 365. Similarly, Microsoft has made it a goal to topple Salesforce as the leading CRM provider.

The deal underwent additional scrutiny by the DOJ before receiving regulatory approval, paving the way for the deal to close.

Executives from both companies highlighted their intent to create a “digital HQ,” to serve as a way for companies to reinvent their productivity.

“We couldn’t be more excited to have Slack as part of the Salesforce family, combining the #1 CRM and the trailblazing digital platform for the work anywhere world,” said Marc Benioff, Chair and CEO of Salesforce. “Together we’ll define the future of enterprise software, creating the digital HQ that enables every organization to deliver customer and employee success from anywhere.”

“We have a once-in-a-generation opportunity to rethink and reshape how and where we work,” said Stewart Butterfield, Slack CEO and Co-Founder. “Salesforce and Slack are uniquely positioned to lead this historic shift to a digital-first world. I could not be more excited for what’s to come.”

The deal was welcomed by other companies as well.

“We are obsessed with continually delighting our clients, and offering them the best experience and value across every interaction,” said Arvind Krishna, Chairman and CEO of IBM. “Salesforce and Slack coming together will help us become more connected, more productive, and more innovative so we can better serve our clients.”