Open source initiatives are developing solutions for NFV MANO (management and orchestration) that are more nimble than standards from bodies like ETSI. The document discusses the three main open source MANO projects - Open Source MANO (OSM), ECOMP, and Open-O. OSM is hosted by ETSI, ECOMP by the Linux Foundation and AT&T, and Open-O also by the Linux Foundation. Each project claims to support NFV environments better than ETSI's framework. The document does not predict which may become dominant over time.