Yaas API provides a variety of services to developers. From REST interfaces to URI searches to aggregation, join hybris YaaS to build business services that reach other developers on YaaS or customers using the hybris Front Office (i.e. hybris Commerce, hybris Marketing, hybris PCM, etc.) and use what YaaS has built to get there faster. The YaaS developer portal contains APIs for all the services developers need to build anything in YaaS and for commerce functionality needed to build a storefront.