ATIS Technology and Operations Council (TOPS) Testbeds Focus Group was originally formed as a Landscape Team in 2015. At that time, a preliminary assessment was undertaken to evaluate existing testbed activities, as well as to identify common requirements that would be relevant to a range of test scenarios. The group completed its Phase 1 objectives with the 2015 publication of a report entitled, "Testbeds Assessment and Next Steps." By launching Phase 2 as a Focus Group in 2016, efforts turned to: assessing the functional use of components of existing test plans such as those from the MultiService Forum; developing detailed test plans; identifying dependencies for each test case; assessing any additional requirements for components or protocols; and evaluating the feasibility of conducting tests in phases.