The Great Wall
When launching a large-scale agile project (e.g. one that requires more than a couple of Scrum teams) then careful consideration should be given to how teams synchronise and information is shared across. Starting off by applying standard scaled agile management solutions (i.e. Scrum of Scrums or SAFe) may help you.
'The Great Wall’ is an lightweight yet powerful approach to scaling agile for a multi-team project that enables the emergence of a scaled management solution that focuses first on visibility, transparency and promoting the delivery of the solution.
The TED Talk ‘3 ways the brain creates meaning’ by Tom Wujec is an excellent resource you should consider to check it out before to start to build your own wall.