An API is the interface
An API defines how one system asks another for information or an action. For a casino platform, that may mean requesting a game catalog, opening a session or answering a wallet callback. The contract needs to specify authentication, identifiers, required fields, errors and retry behaviour. Having an API tells you how to communicate; it does not, by itself, tell you how many suppliers you can access or which content is available to your account.
Aggregation is the service behind the interface
An aggregator brings content from different sources into a common integration and operational model. Its work can include preserving supplier records, mapping studio names, controlling account access and coordinating integration support. The exact scope differs by service. Ask what is included instead of assuming that the word aggregator also covers your player accounts, payments, risk tools or every provider in a public directory.
Compare the work your team will own
With separate supplier connections, your engineers maintain the individual contracts and their operational differences. With an aggregator, you work against its shared contract for the supported flows, while still validating provider-specific behaviour. Compare catalog synchronisation, game identifiers, launch parameters, wallet messages and support ownership. A smaller first integration is useful only if your team can also diagnose errors and reconcile activity afterwards.
A provider name is not a delivery route
The same studio can be distributed through different suppliers. Similar game names are not enough to identify the same offer. WGC keeps supplier offers addressable by their own stable publicId; grouping records for presentation does not erase the individual offers. For your launch list, confirm the actual supplier label, available games and account grants. Check commercial terms separately from the display brand in the lobby.
Questions to bring to a technical review
Ask how revoked credentials are handled, what happens when no labels are granted, how catalog changes are exposed and which operations are safe to retry. Request examples of a normal response and an error with a support reference. For session opening, confirm whether a repeated request creates another session. For wallet operations, establish transaction identity, duplicate handling, timeouts and reconciliation before sending real traffic.
How this applies to WGC
World Gaming Connect combines a B2B backoffice with catalog access and session opening. Account hierarchy, team permissions and a commercial USD balance support operational control. Supplier wallet callbacks are still being developed. The next step is to agree on your content scope and test plan with the team; this guide does not imply that every listed brand or every end-to-end flow is ready for your project.