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Creating Seams in a Mainframe's Batch Pipelines
Introducing seams to allow incremental displacement of a mainframe system.
In a recent project, we were tasked with designing how we would replace a Mainframe system with a cloud native application, building a roadmap and a business case to secure funding for the multi-year modernisation effort required. The orchestration of API requests was managed by multiple internally developed frameworks, which determined the program execution flow by lookups in datastores, alongside handling conditional branches by analysing the output of the code. This collaboration facilitated a just enough understanding of the current as-is landscape, in terms of both technical and business capabilities; it helped us design a Transitional Architecture to connect the existing Mainframe to the Cloud-based system, the latter being developed by other delivery workstreams in the programme.
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