Luxury inverts most of the assumptions martech is built on. Volumes are low, values are high, and a single client can be worth more than a thousand ordinary customers, so techniques that rely on large-sample statistical significance simply do not apply. Every record matters individually, which changes what good data quality means.
It also has a constraint no other sector weighs as heavily: the marketing must not cheapen the brand. Aggressive retargeting, discount-led lifecycle campaigns and obviously automated personalisation do measurable damage to brand equity. The work is to be genuinely useful to a client without ever looking like a supermarket loyalty scheme.
A meaningful share of the sales also happen where the maison cannot see them: in a department store concession, at a multi-brand retailer, through a wholesale partner. The client exists, the relationship exists, and the record belongs to someone else. The client base a luxury brand can market to is usually a good deal smaller than the one it sells to, and closing that gap is worth more than any personalisation programme.