We run an e-commerce site based in Valencia selling handmade leather shoes and bags. We turn over about 450k euros a year and have been hosted on a physical server in a local data center for the last six years. Due to increasing traffic spikes and maintenance headaches, we decided to migrate our entire database, product images, and payment infrastructure to the public cloud next month. We've set aside an infrastructure budget of roughly 1,200 euros per month for this migration.
Our tech team is putting together the migration plan, but rather than theoretical advice, I want to know real-world cloud security examples that actually cause serious damage during a migration from on-prem to the cloud. On paper, everything looks encrypted and secure, but in practice, where do the biggest leaks actually happen? What should we watch out for regarding database leaks, misconfigured permissions, or exposed storage buckets?