Modernising mission-critical applications without stopping the bank.
summary
Danske Bank modernizes its core banking by moving data and functionality off mainframe into cloud in three phases: distributed read (stream mainframe data to a new cloud data model), phase two migrates updates and business logic for selected subdomains to cloud, phase three cuts legacy dependencies so all read/write runs in cloud. Approach uses domain-driven design, developer portal, cloud CI/CD, API gateway, observability and test automation; coexistence patterns preserve data and functional integrity while steadily reducing mainframe transactions.
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chapters (7)
- 0:00Start
- 1:37Triggers for modernization
- 5:36Design & implementation choices
- 8:12introducing distributed read
- 10:28strangle mainframe consumers
- 10:47no legacy dependencies
- 15:33Summary of learnings
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