Open banking and the fragmented value chain in banking have created a need for accepted API specifications for the banking industry or — even more challenging — for true broad and rich API standards. In 2017 Forrester reviewed what the Banking Industry Architecture Network (BIAN) has delivered since its establishment in 2008. This report looks at BIAN's progress in 2017, plans for 2018, and what both mean for the path to standard banking APIs and banks' application development and delivery (AD&D) teams.