Servers receive connections from client devices.
Hardware
Servers can have specialized hardware requirements but just need to run software to provide a service.
Specialized servers may contain more cores, RAM, GPUs, and storage for use. Instead of connected servers. Blade servers are the most common. They are self-contained, thin, and easily replaceable.
Software
The server software is specific to the task and listens to requests. Many server types need to connect to the internet.
Challenges
Servers have many challenges, including cost, environmental impact, security, redundancy, and speed.