We run @shoptimix on Grails 3 deployed on AWS infrastructure. Thus, any post about AWS services related to Grails interests me.
Komal Jain shows how to upload/download/delete a file to/from S3 in some simple steps.
If you are looking for a plugin, checkout @benorama's AWS S3 plugin for S3
If you need to deploy a Grails 3 app (who doesn't) you need to understand the how to configure properly the spring-booot-starter-tomcat dependency. provided or compile
Manvendra Singh explains it.
Pargles Dall`Oglio has a set of posts about setting a private maven repository for a Grails 2.4 plugin. Perfect to share a Grails company plugin among your team.
Moreover, he gives us multiple options: