Mark Zuckerberg, chief executive officer and founder of Facebook Inc., arrives for a House Financial Services Committee hearing in Washington, D.C., U.S., on Wednesday, Oct. 23, 2019.Andrew Harrer | Bloomberg | Getty ImagesFacebook on Monday announced the acquisition of Kustomer, a customer relationship management start-up, for an undisclosed sum.CRM tools help clients manage their communications with customers via phone, email, text or direct messages in specific apps, such as WhatsApp or Messenger. The acquisition of a business-software company like Kustomer is unusual for Facebook. In the past, Facebook has primarily bought consumer-centric companies, like gif catalog company Giphy in May …
