4Sync vs Amazon S3

4Sync has no write-up on Specifiction yet; its figures are above.

Amazon S3 is an object storage service for storing, managing, analyzing, and protecting data used by data lakes, cloud-native applications, and mobile apps. Capacity adjusts as objects are added or removed, without requiring storage to be provisioned in advance. Storage classes cover frequent access, infrequent access, and archiving. Versioning preserves object versions, while Replication can copy objects to buckets in the same or different AWS Regions. Amazon Athena and Redshift Spectrum can query S3 data in place with SQL; S3 Vectors adds vector storage and querying, including integration with Amazon Bedrock Knowledge Bases. Security controls include encryption for uploads, Block Public Access, and Object Lock for customer-defined retention periods. AWS documents access through its Management Console, CLI, SDKs, and REST API. S3 is listed for Android, API, iOS, Linux, macOS, web, and Windows. A Free Tier is available. Pricing is usage-based, with charges varying across storage, requests, retrieval, transfer, and other features. Some archived objects have minimum storage durations of 90 or 180 days, and early deletion incurs a prorated charge.