Ovh s3 bucket in yunohost

I have an ovh vps with 20G storage. Increasing storage seems more interesting financially by s3 bucket than adding predefined storage as you pay only what you use.
I tried searching on the forum but I only found discussions about using s3 buckets as backup storage not as additional.
Anyone has experience with this use case can share with us how he did it and what obstacles he found?
Thanks