Most examples I've seen so far in OEX or DC left the impression that VECTORs
are just something available with SQL with the 3 Functions especially around VECTOR_Search.
* TO_VECTOR()
* VECTOR_DOT_PRODUCT ()
* VECTOR_COSINE ()

There is a very useful summary hidden in iris-vector-search demo package.
From there you find everything you need over several links and corners.

Introduction

Accessing Amazon S3 (Simple Storage Service) buckets programmatically is a common requirement for many applications. However, setting up and managing AWS accounts is daunting and expensive, especially for small-scale projects or local development environments. In this article, we'll explore how to overcome this hurdle by using Localstack to simulate AWS services. Localstack mimics most AWS services, meaning one can develop and test applications without incurring any costs or relying on an internet connection, which can be incredibly useful for rapid development and debugging. We used ObjectScript with embedded Python to communicate with Intersystems IRIS and AWS simultaneously. Before beginning, ensure you have Python and Docker installed on your system. When Localstack is set up and running, the bucket can be created and used.