S/4Hana represents a major initiative by SAP to replatform and refactor its business suite to leverage its Hana in-memory database. The Sapphire Now conference in May 2016 enabled Forrester to assess SAP S/4Hana's progress to date, based on customer interviews and interactions with SAP executives. Application development and delivery (AD&D) professionals considering SAP investment strategies should pay close attention to product road maps and the adoption curve for S/4Hana and have a definitive migration plan in place as customer success reaches mainstream levels in two to three years.