A Service Level Agreement (SLA) is a formal contract between a service provider and a client that defines the scope of services, performance standards, and responsibilities of both parties. It clearly outlines service timelines, quality benchmarks, communication methods, confidentiality, and data protection. The SLA also specifies support processes, escalation mechanisms, reporting requirements, and review periods. Penalties, remedies, or corrective actions in case of service failure may be included. By setting clear expectations and accountability, an SLA helps prevent misunderstandings, ensures consistent service delivery, and builds trust between the service provider and the client throughout the engagement period.