# 캐러셀 배너 설정하기/ Carousel Banners

### H**ow to set up Carousel Banners**

### W**hat is a Carousel?**

A carousel is an ad format that automatically rotates multiple ads at regular intervals on your app or website. Think of it like a "rolling banner" that cycles through different campaigns.\
The carousel option only applies when multiple **campaigns** are running in the same ad slot (not just multiple creatives in one campaign). If there are several creatives within a single campaign, they’ll be shown randomly at equal frequency.

### W**hy Random Rotation Matters:**

If ads were shown in a fixed order, the first ad would get most of the attention. To avoid this bias, carousel banners rotate ads randomly, giving each campaign a fair chance to be seen.

If you're using the **carousel option**, there are a few settings you can customize:

### I**ndicator**

This shows users where they are in the ad rotation—for example, "1/3" if they’re viewing the first out of three ads. The number indicator appears in the bottom-right corner of the banner. It's helpful for letting users know there’s more to swipe through.

### R**olling Time**

This is how often the carousel switches to the next ad. Typically, each ad stays on screen for 3–4 seconds.

When creating a new ad unit, you can easily set this up by:

1. Turning **Carousel ON**
2. Choosing whether to **show the indicator** (e.g. “1/3”)
3. Setting the **rolling time** for each ad

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### H**ow to Use Carousel Banners**

* **When multiple campaigns are running:**\
  Carousel will be activated. Ads from each campaign will roll and switch automatically.\
  \&#xNAN;*Example: If both Campaign A and Campaign B are live, the banner will rotate between A and B.*
* **When a single campaign has multiple creatives:**\
  The carousel won’t be activated. Instead, the creatives will be shown randomly in the same slot.\
  \&#xNAN;*Example: If Campaign A has two creatives, “Creative A” and “Creative B,” they’ll be shown at random in the same banner space.*