If you include a value for the optional “optimization” parameter when posting to /accounts/:account_id/line_items, how is the campaign actually optimized?
The docs state that this controls campaign optimization for “high-intent” users based on key behaviors, but would it be possible to clarify exactly which behaviors are considered to signal higher likelihood of conversion?
Also, what is the difference between the option values? Is DEFAULT a different sub-set of the high-intent behaviours to WEBSITE_CONVERSIONS?
Thanks very much in advance,