Co-hosted with GSMA, this LFN Developer & Testing Forum brings together developers across ONAP, CNTT, and OPNFV, with a special focus on VNF compliance and verification testing. As the principal event for LFN open source projects, the technical gathering provides a platform for community members to collaborate, plan future releases, conduct a plugfest, and perform interoperability, compliance, and integration testing across the full network stack, including NFVI, MANO, and VNFs.