Cloudflare is one of, if not, the leading serverless cloud host, both in terms of cost, speed, safety, scalability and others.
They (somewhat recently) launched their first DB offering, called the D1 which is essentially an SQLite DB, much like the default DB that's created to develop with Strapi.
While other feature requests have been made to request Strapi to become compatible with Serverless architecture and also use 'Cloudflare Images' as an image CDN provider (much like the Cloudinary plugin), one hasn't yet been made for the D1 (nor the R2 for that matter, which is their S3-compatible offering) and while I haven't yet taken a deep dive into the technicalities, I'd expect a native compatibility or a plugin to be relatively straightforward as the DB's are of the same type.