AT&T vs Zerto

AT&T Inc. is an American multinational telecommunications corporation, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T Inc. began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 in the divestiture of the American Telephone and Telegraph Company following the 1982 United States v. AT&T antitrust lawsuit. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corp. and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T Corp. logo and stock-trading symbol.

Zerto Ltd. is a company providing disaster recovery software for VMware-based virtual servers. The product is based on 'hypervisor-based replication', a technology that moves asynchronous replication from the physical storage and disk arrays to the virtualization abstraction layer. This allows for storage-agnostic replication; i.e., a virtual machine can be replicated to another VM operating on a different storage technology.