m19 is an AI-powered optimization tool for Amazon Ads.
Today, I’d like to introduce our TACoS Optimization feature—something that only m19 provides globally.

Many sellers sign up for m19 specifically because they are interested in this TACoS Optimization function.

Before explaining how the feature works, let’s briefly review what TACoS actually is.

What is TACoS?

TACoS stands for Total Advertising Cost of Sales,
which represents how much of your total revenue is spent on advertising.

How should you look at TACoS?

✔ A metric to evaluate the overall health of your business

• When TACoS goes down → Organic sales are growing
• When TACoS goes up → You may be relying too heavily on ads

✔ A way to see whether your ads are “growing” your sales

• Ad investment → Organic sales increase and TACoS declines = Ideal
• Ad investment → Only TACoS rises = Unhealthy

☆ In addition, you should also monitor the ratio of ad-driven sales within your total revenue.

How m19’s TACoS Optimization works

1. It prevents cannibalization of organic sales

In other words, it stops ads from “eating into” your organic performance.

The engine starts by forecasting your total sales—including organic sales—based on your target TACoS.
It then calculates the appropriate ad spend from that forecast and operates your campaigns accordingly.
Because m19 updates the sales forecast daily, ad spend automatically adjusts depending on sales trends.

For example:
If the system detects that organic sales are not improving—or are declining—it will reduce ad spend while still maximizing conversions, ensuring the business can grow naturally without ads cannibalizing organic demand.

This “cannibalization protection” is a major reason sellers resonate with the feature.
Many sellers want naturally sellable products to remain organic, without unnecessary ad spend.

We also explain this in a video—please take a look (turn on Japanese subtitles):
https://youtu.be/ThShHzMR1VU

If you’re interested, feel free to contact m19 Japan.
We’d be happy to send you the full TACoS Optimization materials.

SOPHOLA, Inc. / m19 Japan
Executive Officer / Director
Kaori Iino