During a software development project, what type of agreement ensures 99.9% uptime for a cloud service?

An SLA, or Service Level Agreement, is a formal document that outlines the expected level of service between a service provider and a customer. It specifies various parameters such as uptime guarantees, performance benchmarks, and response times. By ensuring a commitment to 99.9% uptime, it provides assurance to clients that the cloud service will be reliable and available most of the time, helping to manage expectations and establish accountability.

In the context of a software development project, a cloud service's uptime is crucial for maintaining operational effectiveness and continuity. An SLA can also include remedies for the service user if the service provider fails to meet the agreed-upon levels, thereby providing a way to ensure compliance and offer recourse in cases of service disruption.