What is a global tech stack?

A global tech stack refers to a unified set of technology tools, frameworks, infrastructure, and platforms that are used consistently across different regions or countries. This concept was discussed by Nilan Peiris, Chief Product Officer at Wise, on the Lenny's Podcast. Peiris illustrated how Wise operates on a single global tech stack, meaning the same technology and code base is used internationally. This is contrasted with banks, which often operate with localized tech stacks for different countries, and companies like PayPal that also use a single global tech stack but without deep local integrations. Wise combines the advantages of a global tech stack with deep local infrastructure to manage international operations effectively 1.