1. LEVEL 0 G E T T I N G F I N D I N G

2. LEVEL 1 Browser Based Apps Script Based Apps Desktop Apps D A T A A C C E S S P R O T O C O L S VO Query Languages R E G I S T R Y Data Models Semantics Formats Data and Metadata Collection Storage Computation

3. LEVEL 2 All standards REC InProgress Browser Based Apps Script Based Apps Desktop Apps SAMP WS BP CDP SSO D A T A A C C E S S SIAP STC Utypes Registry Interface P R O T O C O L S ADQL VO Query Languages R E G I S T R Y SCS Resource Metadata VOUnits PQL VOResource SpectrumDM SSAP UCD Data Models CharDM VODataService Semantics TAP ObsCoreDM ApplicationRegExt Vocabularies ObsProvDM SSLDM SLAP StandardsRegExt PhotDM VOEvent SEAP SimpleDALRegExt Formats SimDAL SimDM TAPRegExt Resource Identifier VOTable FAP VOSI VOSpace VOPipe UWS Data and Metadata Collection Storage Computation