Three parts. The first is the strategy — what we send to whom, why the audiences are drawn the way they are, and what picking the wrong one costs you. The second is the build: every segment, in the order you would create them, with the exact conditions as they appear in Klaviyo. The third is your own account, read back as it stands today — what is switched on, what each audience actually contains, and who is being taken out.
Nothing is held back. If you want to build this in-house, everything you need is on this page.
Every segment on this page, created in your Klaviyo, named consistently, wired into your campaigns and kept current. Forty-five minutes is enough to walk your list through it.