PCBflow is Siemens’ Xcelerator portfolio with a secure environment for printed circuit board (PCB) design teams to interact with a variety of manufacturers. PCBflow can help optimize designs, reduce front-end engineering cycles, and streamline designer/manufacturer communication. It is powered by the industry-leading Valor NPI software engine, which performs over 1000 DFM checks, which are then sorted and prioritized according to level of severity, guiding users through images and locations on the design for easy identification.
Source: https://www.helpnetsecurity.com/2021/04/07/siemens-pcbflow/