Developers build which of the following components in the cloud?

Developers primarily build web services in the cloud. Web services are modular applications that can be deployed on cloud infrastructure and accessed over the internet. They often use standard protocols and formats, allowing different applications to communicate with one another. This aligns with the cloud paradigm, enabling scalability, accessibility, and integration across various platforms and services.

Federation identity providers, cloud load balancers, and SaaS user mailboxes generally represent components or services that might be utilized within a cloud architecture rather than directly built by developers as primary components. Federation identity providers assist with authentication and authorization services, cloud load balancers distribute traffic across multiple servers to ensure reliability and uptime, and SaaS user mailboxes are part of offering Software as a Service but are not specifically crafted by developers. Developers may interact with these components or use them in their applications, but they are not typically the creators of these items.