Article writing is a great advertising tool for your business at the perfect price - free. 

Even though article writing is a means of advertising, it is not a straight forward sales pitch for your business, your product, or your service. Article writing is far more subtle, it provides the reader with useful, honest, and perhaps entertaining information. 

The article should contain information about a product or service and why it would be beneficial for them to learn more about the product or service.  The free advertising is really at the end of the article in the resource box where the author writes a bit about themselves, their company, their contact information, and a link to their website.  THIS is the free advertising, the link to your website. 

The intent is for the reader to be interested enough in the article to check out the resource box and follow the link to your website where you are pitching your product or service.  THIS is the free advertising tool that drives traffic to your website and basic reason that article writing is beneficial to your business.

It does take a while for article writing to benefit your business. Don't expect to write one article and see an instant and terrific increase of traffic on your website.  One article is just the start.  As you continue to write and post articles online you are increasing your exposure, your popularity, and building your reputation as a knowledgeable individual in your field. There will be loyal readers that will easily turn into paid customers that purchase many of your products.