Core systems are often seen as an effective blocker to innovation and introduction of new technology. With a shifted mind-set you can break the tedious define business requirement, formalise, prioritise, design, reprioritise, implement, test, deploy-chain that can take months or years. If you introduce multiple velocity layers in your system landscape you can allow fast innovation and still make sure your back-end systems will have enough time to ensure data and process quality.
Open API, Open Data Lake and other concepts are at play, forming the API Economy.
More on this as the Capgemini CTO blog.