How can I link data between AWS server and a new brand's website?

Hi, I really can’t find any relevant information. We have a new brand that wants to use Shopify to build an official website, but the problem is that there is already an AWS server as a place to store data. If you want to concatenate the data on both sides, please ask Are there any related services available or can an engineer do it? I hope you can answer me, thank you.