There are a lot of important elements that make a successful marketing campaign, many of which we've covered in recent months. You need to make your ads engaging, you have to have strong SEO strategies to boost your website's visibility and your site should be well-designed to influence customers to make purchases once they're there.
Another very important component - and one that sometimes gets overlooked - is building up your customer base to begin with.
You might have the funniest ad ever, the most sophisticated social media strategies or the most interactive website yet. None of that matters if there aren't any viewers to see it.