# Blog

#### Magento 2 API Permission Reference

21, Dec David Deppner

I've been working with the Magento 2 REST API off and on over the past two years now. One of the hassles with the API is just figuring out what permissions are required to access a particular API endpoint. When setting up access for API users, I have seen some Magento 2 administrators just take the...

#### Financial Models for Ecommerce Advertising

02, Dec David Deppner

Fundamentally, with pay-per-click advertising, the idea is to balance the cost per click that we’re willing to pay with the profit per click that we expect to achieve. As advertisers, we attempt to find the right level of spending that maximizes the business profit. And since every business is dif...

#### ROI is NOT Profit

02, Oct David Deppner

Would you rather have a 10% return on $100 or a 5% return on$1000?

\begin{align} 100 \times 10\%_{ROI} &= 10 \\ 1000 \times 5\%_{ROI} &= 50 \end{align}

If you have to pick one or the other, you’d pick the \$1000 investment at the lower ROI. In the real world, though, we can usua...

#### How Digital Marketers Misunderstand ROI

25, Sep David Deppner

I recently had the "pleasure" of working with a marketing consultant who tried to improve performance for a mutual client by focusing intensely on achieving a high ROI across every one of their marketing channels. This type of thinking is very common in the ecommerce and online advertising world......