Using BigQuery, I have created several audiences based on Google Analytics data, but I need to find a way to export these audiences into Google Analytics 360 and/or into Google Adwords for remarketing purposes. I am inquiring about the best way to go about doing this? Is it possible? Are there ways to automate this process.
You will find this article useful, it describes how this can be achieved by uploading audiences to Google Analytics, and from there into SA360.
I would also recommend you take a look at CRMint, a pipeline tool built for exactly thsi job, as it has a built in worker for sending audiences to GA.
Here is an intro I wrote to CRMint, you may find it useful.