"We think that Shopify is making the web better. We strongly believe in Shopify’s mission to bring small businesses online."Robert Jacobi reflects a bit on this move with a response from Joost about how the company reuses large sections of code: "We’ve created a new settings app for the Shopify application and we’ve built it in such a way that we can re-use that on our other platforms too, which we intend to do soon."
This is a logical move following Yoast’s acquisition by Newfold Digital. I suspect the growth in market share for Yoast in the WordPress ecosystem has reached a point where it is necessary to grow into other markets. I won’t be surprised to see a few more WordPress plugins and services cross into Shopify territory.