SaaS Image Exports: 4 Object Storage Controls for Private Thumbnails and Signed Links

For a small fintech SaaS serving US and EU users, the recommended architecture keeps original images and thumbnails in object storage and performs resizing on the server after upload. A CDN is used only when URL-driven, on-the-fly transforms at the edge are required, shifting behavior into another product’s URL grammar and cache model. Retention policies, private training artifacts, and access control are easier when the application writes named outputs.