AMALYZE
Glossary
Glossary

Dayparting

Dayparting is the practice of changing bids or pausing campaigns by hour-of-day and day-of-week to match conversion patterns. Amazon Marketing Stream makes it feasible because it delivers hourly performance data in near real time.

daypartinghourly biddingtime-of-day biddinghourly bid scheduling

Dayparting schedules bid changes — or full campaign pauses — to specific hours and weekdays. The premise: conversion rate is not constant through the day. Mid-week mornings convert differently than Friday nights, and the bid that produces a 20% ACOS at noon can produce a 60% ACOS at 3 a.m.

Why dayparting only became practical with AMS

Before Amazon Marketing Stream, reports were daily. You could see that Tuesday converted well but not which hours. AMS streams impressions, clicks, spend, orders, and sales in 1-hour buckets, usually within 30–90 minutes. That is the input dayparting needs to be more than guesswork.

What hourly patterns look like

Three typical shapes in EU/US consumer categories:

PatternDescriptionTypical fix
Late-night spend leakClicks 11pm–6am at 2–3× the day-average CPC, CVR near zeroCut bids 40–70% in that window
Lunch-hour spike12–2 pm CVR 1.5× day-averageRaise bids 15–25%
Sunday evening intent7–10 pm CVR strong, low competitionRaise bids 10–20%

Patterns are category- and ASIN-specific. Discover yours from at least four weeks of AMS data, never from a single week.

Implementation

Amazon's native UI does not expose hour-by-hour bid schedules. Dayparting is implemented one of two ways:

  1. Bid rules in a third-party tool (e.g. AMALYZE Rule Builder) that consume AMS and call the Ads API to push hourly bid adjustments.
  2. Campaign pause/resume on a cron. Cruder but effective for the late-night leak case — pause the campaign at 11 pm, resume at 6 am.

Common mistakes

  • Dayparting before you have 4+ weeks of AMS data. You will optimise to noise.
  • Hour-by-hour bid changes on low-volume keywords. Below ~50 clicks per hour bucket, you have no signal.
  • Ignoring time zone. A US-East seller running an EU marketplace must schedule in CET, not local time.
  • Not coordinating with budget pacing. Aggressive morning bids that exhaust the daily budget by noon leave you dark for the evening spike.

Related terms

Bid (CPC Bid)
A bid is the maximum cost-per-click an advertiser submits for a keyword or product target in an Amazon Advertising auction. It is the ceiling — the realized price paid per click is the CPC.
Rule-Based Bidding
Rule-Based Bidding is the Amazon bidding strategy where the platform autonomously adjusts bids to chase a user-defined ROAS or ACOS target, overriding most manual bid inputs. Convenient for hands-off accounts, opaque for accounts that need diagnostic transparency.
Amazon Marketing Stream
Amazon's near-real-time hourly data feed for advertising performance — replacing the daily reporting cadence of the Ads Console and unlocking 24/7 bid, budget, and placement optimization.
Bidding Strategy
Bidding strategy is the per-campaign setting that controls how Amazon adjusts your bid in the auction — Fixed Bids, Dynamic Bids (Down Only or Up and Down), or Rule-Based Bidding. It determines the price range, not just the headline number.
Daily Budget (Amazon Advertising)
The daily budget is the maximum amount Amazon will spend on a campaign in a single day before pausing it until the next day. Budget allocation by campaign role — not equal distribution — determines whether an account scales profitably.

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