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What is Amazon Marketing Stream and how does it help advertisers?

Richard

Co-Founder at Amersify

Introduction

Amazon used to keep advertisers half-blind — delayed reporting, limited hourly data, and no visibility into when customers actually converted. That changed with Amazon Marketing Stream (AMS). It gives brands real-time performance data, updated hourly, so you can adjust bids, budgets, and targeting instantly based on when shoppers are actually buying. In this guide, we’ll break down exactly what the Stream is, why it matters, and how you can use it to gain a competitive edge on Amazon Ads.

What Is Amazon Marketing Stream?

Amazon Marketing Stream is a data feed delivered via Amazon Ads API v3. It provides advertisers with near real-time updates — including impressions, clicks, costs, and conversions — refreshed every hour. Before AMS, advertisers had to wait up to 48 hours for data, making optimisation reactive. With the Stream, you can now make proactive, hour-by-hour decisions.

AMS is part of Amazon’s advanced advertising APIs, designed to provide fine-grained, timely data that powers smarter campaign decisions.

Key Benefits

Hourly data refresh (vs daily or delayed reports)
More accurate attribution and performance visibility
Improved campaign pacing and bid control
Reduced wasted spend from overnight inefficiencies

💡 Amersify Tip:

Think of AMS as your account’s “live heartbeat”. It tells you exactly when your ads are performing — not just how much they’re spending.

How It Works

Amazon Marketing Stream connects directly to your ad data through an API endpoint, delivering event-based updates. It sends aggregates for key metrics such as impressions, clicks, spend, and attributed sales per campaign, placement, and targeting type. The data is pushed in near real time — typically refreshed every hour — enabling you to react faster than traditional reports allow.

To access it, you’ll need a developer or a third-party tool (like Pacvue, Perpetua, or Helium 10 Adtomic) integrated with the API. These tools subscribe to the Stream’s schema-based event notifications, which means data arrives as it’s processed, not pulled manually.

Once connected, your analytics platform ingests this hourly data and displays trends — for instance:

When CPC spikes during lunchtime browsing
Which hours of the day convert best
When ad budget is being wasted on low-intent clicks

🧠 Pro Insight:

The Stream doesn’t replace Amazon’s Advertising Console — it enhances it. Use both together for maximum control.

Why It Matters to Advertisers

Hourly Insights = Smarter Bidding

You can identify your peak conversion hours and down-time windows. For example, if data shows conversions surge between 6–9 p.m., increase bids in that window and reduce them overnight.

Improved Budget Efficiency

AMS helps you prevent daily overspend. If morning clicks burn through 70% of your budget before lunchtime, Stream data alerts you to reallocate dynamically.

Real-Time Trend Detection

Spot anomalies instantly — CPC spikes, conversion dips, or changes in search demand.

Event-Specific Strategy

During Prime Day, Black Friday, or seasonal events, you can watch hourly data trends and react the same day — not 48 hours later when the opportunity’s gone.

Practical Use-Cases

Use-Case	What You Can Do with AMS
Dayparting	Increase or decrease bids by hour to match shopper behaviour.
Budget Pacing	Monitor spend distribution throughout the day to avoid early depletion.
Placement Optimisation	See which hours deliver top-of-search conversions and allocate spend accordingly.
Seasonality Tracking	Compare hourly data across multiple days or weeks to identify recurring peaks.
Cross-Marketplace Performance	Analyse how time-zone differences affect campaigns by setting up API subscriptions per marketplace (e.g., US, UK).

💡 Amersify Tip:

Don’t automate immediately — use a few weeks of Stream data first to establish your baseline before layering in automation rules.

Integrating AMS into Your Workflow

Step 1 – Access the Stream

Connect via Amazon Ads API v3 or through approved third-party software. Most tools now include an AMS toggle or module.

Step 2 – Store the Data

Use a database or BI tool (e.g., Google BigQuery, Power BI, Looker Studio) to store and visualise hourly data.

Step 3 – Analyse Patterns

Identify your most profitable hours, days, and placements.

Step 4 – Automate Optimisation

Once stable, integrate automation rules — e.g., increase bids +25% between 18:00–22:00 if ROAS > 4×.

🧩 Pro Insight:

Even a simple hourly analysis can reveal hidden inefficiencies — many brands waste 10–20% of daily spend outside their best-performing windows.

For brands scaling beyond Sponsored Products and Sponsored Display, consider complementary Amazon Ads Data Hub (AADH) or Amazon DSP Stream integrations for richer cross-channel insights.

Limitations and Considerations

AMS currently supports Sponsored Products and Sponsored Display ads, with other ad types rolling out gradually.
Requires technical setup or third-party access — no plug-and-play dashboard is available.
Data is aggregated hourly, not per minute, and there can be occasional latency beyond one hour.
Attribution windows apply (typically 7 days click / 14 days view).
Amazon withholds sensitive data fields such as customer-identifiable info and exact keywords to comply with privacy policies.
There are API throttling limits to consider with high volume accounts.

💡 Amersify Tip:

If you’re a smaller brand, partner with an Amazon Ads specialist or agency (like Amersify) — we can connect you to the Stream without requiring in-house developer support.

How to Measure Success Using AMS

Define Baseline Metrics: Record your average CPC, CTR, and CVR before enabling AMS.
Optimise by Hour: Adjust bids and budgets around performance peaks.
Track ROAS Improvement: Compare results before vs after Stream activation.
Monitor TACOS: Look for improved organic growth after consistent hourly optimisation.

🧠 Pro Insight:

AMS isn’t just about saving money — it’s about redeploying it to the hours that drive profit.

FAQs

Do I need AMS to advertise successfully on Amazon?

Not necessarily, but it gives you a significant competitive edge, especially in mature markets or high-competition niches.

Is AMS available for Vendor Central accounts?

Yes — it supports both Seller and Vendor advertisers through API-enabled integrations.

Does AMS replace Advertising Console reports?

No. AMS complements them with real-time, granular data. Use both together.

Can I use AMS without a developer?

Yes — if you use a third-party partner tool integrated with the API.

Can AMS be integrated with Amazon DSP campaigns?

Not directly. However, complementary insights can be gained using Amazon Marketing Cloud (AMC) for DSP data analysis alongside AMS.

Summary

Amazon Marketing Stream gives advertisers what they’ve always needed — speed, precision, and visibility. It transforms campaign management from guesswork into data-driven strategy, helping brands allocate spend by hour, react instantly to market shifts, and maximise profitability. In short: AMS turns your Amazon Ads strategy from reactive to predictive — and that’s where the real competitive advantage begins.

Author Bio

Richard is Co-Founder at Amersify with over a decade of Amazon advertising experience, specialising in data-driven optimisation strategies for brands in competitive markets.