What are the differences between SLA (Service Level Agreement) and SLR (Service Level Requirement)?

A Service Level Agreement (SLA) is a formal contract that outlines the agreed-upon levels of service between a service provider and a customer. It specifies the services to be provided, performance metrics, and consequences for not meeting the agreed-upon levels.

On the other hand, a Service Level Requirement (SLR) is a document that defines the desired levels of service that a customer expects from a service provider. It serves as a guideline for creating the SLA and helps ensure that the agreed-upon service levels meet the customer's needs and expectations.