The Fedora HTTP API is partitioned into a core and optional modules. Optional modules are grouped in logical packages by use.

The core module comprises LDP with the Fedora 4 core ontology.

Optional suites might include:

Some optional suites will feature their own ontologies, which will describe the RDF that they make available to transact across LDP as extensions to the upper ontology. Some optional suites may also define an accompanying Java SPI that will define types and semantics for a pluggable implementation of that suite's functionality. For example, the Backup/Restore API should be accompanied by an SPI that includes the types that define backup/export formats, and extension mechanics to add to them.

An obvious pair of questions: should any of these APIs be folded into the baseline? Are there others not yet listed here?