When it comes to building long-term traffic potential for your companies online marketing strategies, SEO and content marketing will typically offer you the most significant return on your investment (ROI). They have virtually no risk and naturally, lend themselves to compounding returns over time.
Of course, this is as long as you can execute them correctly. However, there is one major disadvantage to these particular strategies; they take a long time to get set up before you even start to see a positive ROI.