First, I am working on a project to develop a SaaS that controls ESL. Since this service is aimed at SMB/SME retail customers, I believe it would be good to integrate with Shopify. I am planning to use the Shopify API to send information to the SaaS that controls the ESL (Electronic Shelf Labels).
After logging into the SaaS, there is a process where users input information from Shopify POS or specific account details and synchronize product information registered on Shopify.
I also plan to link the following details registered on Shopify to the SaaS: [product name], [product stock], [product original price], [product sale price], [barcode], and [SKU]. Additionally, I am considering how to send updates (such as product stock or price changes) from Shopify POS to the SaaS. Since the SaaS is integrated with ESL, I believe real-time synchronization will be possible if the information can be sent to the SaaS.
In this case, what APIs or webhooks should I refer to?