Transitioning to a cloud provider, such as AWS, often enables cost savings as the customer benefits from the cloud's economies of scale and avoids heavy upfront capex for infrastructure. By only provisioning resources that match the current demand with the flexibility to scale, a company utilizes the fundamental cloud principle of elasticity, which allows for cost optimization without sacrificing the ability to meet future demand. In contrast, over-provisioning with reserved instances or mimicking on-premises security measures in the cloud could incur unnecessary costs and may not fully leverage the cloud's cost-efficiency features.