Your company has developed a monolithic, 3-tier application to allow external users to upload and share files. The solution cannot be easily enhanced and lacks reliability. The development team would like to re-architect the application to adopt microservices and a fully managed service approach, but they need to convince their leadership that the effort is worthwhile. Which advantage(s) should they highlight to leadership?

The correct answer highlights key benefits of re-architecting to microservices and fully managed services. Decoupling infrastructure from the application simplifies management and allows for independent scaling. Microservices facilitate faster development and release of new features, as teams can work on services independently. Fully managed services reduce the operational burden of managing underlying infrastructure and can include integrated CI/CD capabilities. A/B testing is easier with independently deployable services, and microservices inherently offer better scalability for individual components. The first incorrect option is too absolute regarding cost; while operational costs might decrease, initial migration costs can be significant. The second incorrect option describes containerization, which is a step towards microservices but doesn't encompass all the benefits of a full re-architecture to managed services. The fourth incorrect option, Migrate for Compute Engine, is for migrating VMs, not re-architecting applications.