pay-per-click
{'<entity_0>': 'pay-per-click', '<entity_1>': 'PPC'}
[['pay-per-click', 'alternative', 'PPC']]
<entity_0> (<entity_1>) is an internet advertising model used to drive traffic to websites, in which an advertiser pays a publisher (typically a search engine, website owner, or a network of websites) when the ad is clicked. <entity_1> display advertisements, also known as banner ads, are shown on web sites with related content that have agreed to show ads and are typically not <entity_0> advertising. <entity_0> (<entity_1>) has an advantage over cost per impression in that it conveys information about how effective the advertising was. In many cases, the publisher has a rate card that lists the <entity_0> (<entity_1>) within different areas of their website or network.
['digital marketing']