Documentation on Craft Cloud asset uploading from front end contexts

[jamesmacwhite]

It is already well documented that Craft Cloud web requests are limited to 6MB due to AWS Lambda. A 6MB+ request i.e. POST data would be rare, but the key area where this will likely be a factor is file uploads from front end forms.

https://craftcms.com/knowledge-base/cloud-quotas#requests-responses

Asset uploads from the Craft control panel are not subject to this 6MB limit, as they are uploaded directly to your bucket and served from our CDN. Asset uploads from the site’s front end are subject to this limit unless you provide a way to upload them directly to your bucket from the front end (similar to how the Craft control panel does it).

It would be great to get some official documentation on how this can be implemented, in particular for plugin developers. I can see form plugins like Formie and Freeform being able to take advantage of this will provide a less limiting experience for file uploading through forms.