Cloud migration’s biggest illusion: Why modernisation without security redesign is a strategic mistake

By Jayjit Biswas

Cloud migration has become one of the most visible symbols of enterprise modernisation. Boards associate it with agility, resilience, scalability and speed. CIOs view it as a pathway to digital transformation. Business leaders often see it as the foundation for analytics, automation and AI-led growth. Yet beneath this strategic enthusiasm lies a serious and recurring mistake: many organisations still approach cloud migration as a technical relocation exercise rather than a redesign of security architecture.

That error is proving costly.

Too many enterprises still treat the cloud as a destination where applications and servers can simply be moved, with security somehow improving by default because the hosting environment has changed. This is the biggest illusion in modern IT. Cloud migration is not a lift-and-shift of infrastructure. It is a shift in trust model, operating model and control design. If security thinking does not evolve at ...