Thoma Bravo completed the acquisition of Calabrio, a provider of products and services to help companies streamline customer service, support and workforce management through cloud-first software systems, from KKR. Financial terms were not disclosed. "Calabrio has successfully established itself at the forefront of the workforce engagement management industry by transitioning to the cloud, capitalizing on the wave of digital transformation and expanding its customer relationships," Seth Boro, Thoma Bravo Managing Partner.