Difference between XOS and ONAP ?

Question

There are multiple orchestra-tor available. On what basis, it is decided to use a specific orchestrator such as XOS or ONAP.

Answer 1

ONAP provides a comprehensive platform for real-time, policy-driven orchestration and automation of physical and virtual network functions that will enable software, network, IT and cloud providers and developers to rapidly automate new services and support complete lifecycle management.
By unifying member resources, ONAP will accelerate the development of a vibrant ecosystem around a globally shared architecture and implementation for network automation–with an open standards focus–faster than any one product could on its own.

XOS, a service orchestration layer built on top of OpenStack and ONOS that manages scalable services running in a Central Office Re­architected as a Datacenter (CORD). XOS makes it possible to create, name, operationalize, manage and compose services as first­class operations, and in doing so, unifies the management of SDN­based control applications, NFV­based data plane functions, and traditional cloud services.