Embedded apps can now integrate with Shopify by using Shopify App Bridge
Tools
Effective November 08, 2018
We’re excited to announce that we're launching a new way for apps and channels to be embedded directly into the Shopify admin, including Shopify mobile and POS. This new library is called Shopify App Bridge. This consolidated tooling brings together the functionality previously provided by the Embedded App SDK and the POS App SDK.
This update is currently being rolled-out to all current consumers of the EASDK, and since it’s backwards compatible, no new work is needed to get it set-up. It’ll also be available as open source on GitHub soon as well.
For more information, please check out the docs here.