E-commerce continues to grow at an unprecedented pace. Total retail sales, excluding the sale of items not normally bought online — like fuel, automobiles, and food at restaurants — hit $3.628 trillion last year, up 3.9 percent year over year from $3.490 trillion. E-commerce accounted for a 14.3 percent share of that total, and 51.9 percent of all retail growth. That is substantial, and it has encouraged many people to take advantage of the booming opportunity. It can be difficult for SMB owners to compete without the right tools in place.