A good marketing strategy is important to a product as it enhance ability to make consistent sales with cost effective methods. You can have the best product or services, if you are not engaging in good marketing strategy you will definitely struggle with sales. A strong marketing will push a product or a services to the target audience and give them every reason why they need to buy and this make it easier for businesses to make sales. I can only speak for the digital product which involves providing email Marketing together with strong offer to make consistent sales. You must have build list of loyal subscribers for your email Marketing to be effective with the product you are promoting online.