Connect Amazon & sync

After signing in, a short onboarding connects your advertising data in three steps:

1. Sign in with Amazon. A standard Amazon OAuth flow links your Amazon Ads access to MerchDash. Your tokens are encrypted at rest.
2. Approve account access. MerchDash links the advertiser accounts you own through its Manager Account — no manual steps in the Amazon console.
3. Select marketplaces & sync. Pick which marketplaces (advertiser profiles) MerchDash should keep synced. Each one is synced separately.

Marketplaces are separate accounts

Each marketplace (US, UK, DE, FR, IT, …) is its own advertiser profile at Amazon with its own campaigns, currency, and reports. The marketplace switcher in the top bar changes which one you are looking at; automations and Smart Rules are configured per marketplace too.

First sync and what gets pulled

Once a marketplace is selected, MerchDash pulls your campaigns, ad groups, keywords, targets, search terms, and daily performance reports. Amazon's reporting API only reaches back about 95 days, so MerchDash archives every synced day permanently — your long-term history keeps growing even after Amazon drops it. The mechanics (backfill, refresh cadence, restated days) are covered in How data sync works.

Linked accounts

If you run more than one Amazon Ads account (for example a second Merch account), you can link accounts in Settings. Linked accounts appear as one merged view: tables and charts combine both, and automations and Smart Rules evaluate across both. When a rule changes something, MerchDash routes each write to the Amazon account that actually owns the campaign — you never have to think about which account an entity belongs to.