The ESO Phase 3 infrastructure provides a channel to submit reduced data products for publication to the astronomical community at large and long-term data preservation in the ESO science archive facility. The ESO archive serves as the central collection point for data reduced by ESO users but also for the products of in-house pipeline data processing. One unique standard data format is associated to each type of product like image, spectrum, IFU cube, etc. Here we present an overview of the Phase 3 process and its key features, the data types supported by the the ESO Science Data Products Standard and the data collections already served by the Phase 3 service.