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Serverless Computing

Serverless computing offers backend services on a pay-as-you-go basis, allowing users to write and deploy code without worrying about the underlying infrastructure. Users are charged based on their actual computation, avoiding the need to reserve or pay for fixed bandwidth or server quantities since the service auto-scales. Despite being called “serverless”, physical servers are still in use but hidden from developers. In the early days of web development, owning and managing physical servers was necessary, which was both cumbersome and costly. Cloud computing introduced the ability to rent fixed server units remotely, but this often led to over-purchasing server space to handle unexpected traffic spikes, resulting in wasted resources. Cloud vendors introduced auto-scaling to address this, but it couldn’t fully prevent the cost impact of sudden high activity, such as a DDoS attack.