ITIL 4 SLM key terms

The ITIL practice that sets clear, measurable expectations for service quality, negotiates them with customers, monitors actual performance against them, and drives corrective action when targets are missed.

A documented agreement between a service provider and a customer that records the services to be delivered and the measurable levels of quality the provider commits to achieve.

A single measurable target for one aspect of service performance, such as availability percentage or response time, that supports an agreed service level within an SLA.

An internal agreement between teams within the same organization that specifies the support and performance each party must supply so that customer-facing service level targets can be met.

A contract with an external supplier that defines the goods or services supplied and the performance the supplier must deliver to support the provider's commitments in customer SLAs.

A statement of what a customer needs from a service in terms of outcomes and quality, captured before any agreement is drafted and used as the input to SLA negotiation.

A scheduled meeting between provider and customer that examines reported performance against agreed targets, discusses satisfaction and issues, and agrees improvement actions or changes to the agreement.

A periodic document that presents measured performance against each agreed target, explains deviations and their causes, and states actions taken, giving customers a factual basis for review.

The ITIL 4 model describing how all components and activities of an organization work together to create value, comprising guiding principles, governance, the service value chain, practices, and continual improvement.

The set of six interconnected activities - plan, improve, engage, design and transition, obtain and build, and deliver and support - through which an organization converts inputs into valuable services.

Seven general recommendations, such as focus on value and start where you are, that guide decisions and behaviour at all levels and are applied when designing and improving service level arrangements.

The specific sequence of activities and resources an organization uses to deliver a particular product or service to a consumer, which SLM must understand to set realistic targets.

The service value chain activity concerned with understanding stakeholder needs, maintaining relationships, and keeping communication transparent, and the point where SLM requirements and feedback enter the value chain.

The recurring activity of identifying and implementing improvements to products, services, and practices, used by SLM to raise achievable service levels and close performance gaps over time.

A record of improvement opportunities with their owners, status, and expected benefit, used to track actions arising from service reviews and performance shortfalls until they are closed.

A measure selected because it demonstrates how effectively a critical success factor is being achieved, used to judge whether service levels and supporting activities are on track.

The few things that must go well for a service or practice to succeed, which determine which measures are worth tracking as indicators of service level performance.

The defined way data is collected, calculated, and attributed for a specific metric, including source, formula, sampling, and exclusions, so results are consistent and comparable over time.

A quantifiable property of something being observed, such as ticket volume or uptime minutes; on its own it is a raw number and only becomes meaningful when interpreted against a target.

The proportion of an agreed period during which a service is capable of performing its required function, usually expressed as a percentage and calculated from agreed downtime definitions.

The time period during which a service is expected to be available and measured, distinguishing supported hours from excluded hours so availability calculations are unambiguous.

The elapsed time between a user or system raising a request, incident, or transaction and the provider beginning to act on it or returning a first reply, as defined in the agreement.

The elapsed time from when a request, incident, or problem is logged until it is resolved or restored to an agreed working state, typically measured against priority-based targets.

A classification that determines the order and speed with which work is handled, usually derived from impact and urgency, and used to attach different response and resolution targets.

A measure of the effect of an incident, request, or change on business processes and users, ranging from one person affected to an entire organization or critical service.

A measure of how quickly the business needs a resolution, based on the acceptable delay before the impact becomes significantly worse.

The degree to which a service meets or exceeds the customer's expectations, measured through surveys, feedback, and perception scores and used alongside objective metrics in reviews.

The structured collection and use of customer feedback, needs, and expectations to inform service design, targets, and improvement priorities rather than relying on provider assumptions.

A structured description of services offered, including their features, ordering information, and commitments, which makes agreed service levels visible to users and customers.

A relationship in which one service or component relies on another to function, relevant to SLM because the performance of supporting elements constrains achievable service levels.

The practice of ensuring suppliers and their performance are managed appropriately, including aligning supplier contracts with the service levels the organization has promised its customers.

A description of one or more services designed to address the needs of a target consumer group, covering goods, access to resources, and service actions.

The two components of value in a service: utility is fitness for purpose (what it does), and warranty is fitness for use (how reliably and consistently it performs).

A failure to meet one or more agreed service level targets within the defined measurement period, which triggers reporting, root cause analysis, and agreed remediation or credits.

A financial or contractual remedy, such as a fee reduction or account credit, agreed in advance and applied when specified service level targets are not achieved.

An SLA structure with separate layers for the customer, the service, and individual service elements or components, so commitments are consistent from corporate level down to technical detail.

The defined interval, such as a calendar month or quarter, over which performance data is aggregated and reported, fixing the boundary for judging whether targets were met.

A provision in an agreement that states which events or conditions do not count against service level targets, such as agreed maintenance windows or customer-caused outages.

A documented plan listing prioritized actions, owners, and timelines for raising service levels or fixing recurring shortfalls, created and tracked as part of continual improvement.