What is video marketing?

Video so many times We all have heard it. In SEO it seems to have an important role. How a video plays important rolein a site promotion ?Should the videos be relevant? What is video marketing? I've heard it so many times but clarifies me about that.I want to know in detail about it sothat I can make people... show more Video so many times We all have heard it. In SEO it seems to have an important role. How a video plays important rolein a site promotion ?Should the videos be relevant? What is video marketing?
I've heard it so many times but clarifies me about that.I want to know in detail about it sothat I can make people understand this.
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