In The Handbook of Banking Technology (John Wiley & Sons, 2021), Walker and Morris provide a first comprehensive view of the systems that support a bank. During the interview, they bring out the interactions of these components and how the themes they touch on in the book come together. Years of first-hand experience combined with detailed research come together to explain the intricacies of the technological architecture of modern banking. Quite often the authors provide a long-term perspective of how these applications develop in order to provide a better understanding of how we got to where we are. 
The other podcast mentioned in this interview is James Bessen "The New Goliaths". 
Bernardo Batiz-Lazo is currently straddling between Newcastle and Mexico City. You can find him on twitter on issues related to business history of banking, fintech, payments and other musings. Not always in that order. @BatizLazo
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