Node.js SaaS Report Downloads: Object Storage and Signed URLs for Safer Export Delivery

Best practices for Node.js SaaS report delivery involve storing generated files in private object storage and serving them via short‑lived signed URLs. This approach enforces tenant isolation, prevents cross‑tenant data leaks, and separates storage from transformation, reducing costs and ensuring compliance for PDFs, DOCX files, and image thumbnails. Using S3‑compatible providers and a Node.js worker with Sharp for resizing further streamlines the pipeline while keeping originals secure and auditable.