Engineering Multicloud Consensus: Implementing Distributed Locking with Fencing Tokens

Distributed systems operating across Amazon Web Services and Microsoft Azure often encounter critical failures when attempting to manage shared global state. In a multicloud environment, where a command service in AWS and a worker process in Azure must coordinate access to a shared resource, such as a high-value financial ledger or a limited inventory pool, traditional local concurrency controls are insufficient. Relying on eventual consistency in these scenarios introduces the risk of race cond