What is the fundamental difference in the targeting mechanisms between 'interest targeting' and 'keyword targeting' within Pinterest Ads Manager?

The fundamental difference between 'interest targeting' and 'keyword targeting' in Pinterest Ads Manager lies in how Pinterest identifies the audience. Interest targeting focuses on users Pinterest has categorized as being interested in specific topics based on their past behavior on the platform, such as the boards they follow, the Pins they save, and the content they interact with. For example, if a user frequently saves Pins related to 'home decor' and follows boards about 'interior design,' Pinterest will categorize them as being interested in home decor. In contrast, keyword targeting focuses on showing ads to users who are actively searching for specific terms or phrases on Pinterest. This means the ads are triggered by the keywords users enter into the Pinterest search bar. So, if a user searches for 'modern sofa,' ads targeting the keyword 'modern sofa' would be eligible to appear in their search results. Interest targeting reaches users based on their demonstrated long-term interests, while keyword targeting reaches users based on their immediate search intent.