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A content pillar is a substantive piece of content on a specific topic or theme which can be broken out into many derivative assets.
For example, a content pillar could be an eBooks, a whitepaper, a report, or a guide on a particular topic that spawns a variety of blog posts, slideshare presentations, social media posts, webinars and videos that relate to that same topic.
For more defintions like these, please check out our series:
• Content Marketing Definitions