Creating a look-alike will be useful if you have a retargeting audience (at least 300 users) sharing the characteristics of your target audience.

A few examples:

• If the goal of the advertising campaign is lead generation. You get a high conversion when targeting by your contact database, but the base is small and has few leads. Targeting by interest, sex and age bring much less conversion and more expensive conversions. The solution is an exact look-alike using the contact base. The system will find Internet users who are as close to your customers as possible. By launching a look-alike campaign, you will get more leads and effectively use your budget.
• If the target audience has features that a standard set of targeting fails to determine. For example, you need high income users. If you have the original audience that meets the requirements, we will find 10 times more other rich people and you finally sell out your fleet of private jets.

To create a look-alike retargeting audience from a file:

1. Go to your advertising account.
2. Choose the Retargeting section.
3. Go to the Look-alike audiences section.
   
4. Click on the Find look-alike audience button.
   
5. Select your original audience from your advertising account and click Start audience search.
   
   A search for a look-alike audience may take some time, which depends on the number of users in the audience. At this time, the audience will have the �Running� status.
   
   You can leave the page, while a look-alike audience is being searched for. When a look-alike audience is generated, the status will change to �Complete�
   
   Then click on the Create audience button. Then you can choose the ratio of the size and matching level of the look-alike audience.
   
6. Generate a look-alike audience by clicking on the Create button. The audience status will change to �Audience is created�.
   
   When the creation is completed, a look-alike audience of the selected size will appear in the Audiences tab.
   
   Now you can create and run ads for the new audience.
   
   

Please note that the original audience is not included in the look-alike one.

After creating a look-alike audience, the system will offer you to choose the size to matching level ratio. The smaller the look-alike audience is, the more the users included into it will be similar to users in the original database.

The original audience for creating a look-alike audience should involve at least 300 users. This is due to the technical requirements of the system: the algorithm requires a certain amount of data to identify characteristic features in behavior.