# Glossary

> The words Douklar uses, and what each one means in the product.

| Term | Meaning |
|---|---|
| Account (profile) | One AWS account connection with its own credentials, used for that account alone. The console says account; code and stored fields say profile |
| Source / destination | The account and resource read from, and written to. The source is only read |
| Mapping | A source to destination pair for one service, possibly renamed |
| Route | The source to destination path of a run, a saved account pair, or a mapping's names |
| App | A named group of mappings |
| Fan-out | One run from one source to several destination accounts |
| Preflight | Read-only checks before a run |
| Review | The step that lists what will be written, which you confirm |
| Run / job | A queued, worker-executed transfer with durable logs and outcomes |
| Binding | The non-secret configuration recorded when a run is queued and re-checked when it starts |
| Relay | The default S3 path: the worker downloads to staging disk, then uploads |
| Server-side copy | S3 `CopyObject` inside AWS, chosen per run |
| S3 Batch | Douklar's console for AWS S3 Batch Operations jobs |
| Readiness | Read-only inspection of what a Batch job needs |
| Prepare | The one action that creates resources: support bucket, Batch role and policy, after you confirm |
| Held job / Start | An AWS-generated-manifest job that waits until you press Start |
| Waybill | The S3 Batch evidence record in Activity |
| Activity | Durable history of runs, with Re-run and Retry failed |
| Seeding | DynamoDB insert-only copy into an existing table |
| TTL decision | Per DynamoDB mapping: `preserve_all` or `exclude_expired_at_cutoff` |
| Mirror / incremental | The two CodeCommit push modes |
| Graph / referrers | The OCI 1.1 tree under an ECR image: indexes, SBOMs, signatures, attestations |
| Image checks | Read-only verification of ECR mappings |
| Hand-over | The exact statement or command Douklar gives another account's admin instead of writing there |
| Sanctioned write surface | A write the mutation policy explicitly allows |

Source: https://douklar.app/docs/douklar/glossary (Douklar docs, last checked 2026-10-23)