Types of SLAs in ITIL 4: A Foundation for Success

 Types of SLAs in ITIL 4: A Foundation for Success


Service Level Agreements (SLAs) are formal agreements between service providers and customers that define expected service performance and responsibilities. In ITIL 4, understanding the various types of SLAs is essential for the Foundation exam and real-world IT service management.

 

🧩 Core SLA Types Explained

Type

Description

Exam Tip

Customer SLA

Covers all services delivered to a specific customer or group (e.g., Finance Dept SLA).

Ask: Who is the customer? Group SLAs are common in multi-department setups.

Service SLA

Addresses performance of a single service across all customers (e.g., Email availability).

Know that “Email SLA” might apply to multiple users.

Multi-level SLA

Combines multiple SLA layers to cover different scopes:

Corporate-level SLA

General SLAs that apply to the entire organization.

Generic service expectations are standardized.

Customer-level SLA

Tailored SLAs for individual customer groups.

Custom terms based on department needs.

Service-level SLA

Detailed SLAs specific to individual services provided to specific customers.

Highlights specific metrics and targets.

Multi-party SLA

Joint SLA among multiple suppliers, or supplier + service provider + customer

Focus during questions about ecosystem coordination.

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🔗 Relationship Between SLA Types & ITIL Practices

  • Service Level Management: Owner of all SLAs; responsible for negotiation, monitoring, reporting.
  • Supplier Management: Especially relevant with multi-party SLAs—vendors must align with terms and deliverables.
  • Relationship Mgmt and Governance: Ensure all corporate-level SLAs reflect organizational strategy and compliance.

👉 For deeper insights, check out related posts: Service Level Management and SupplierManagement.

 

🎯 Exam Prep: Real-World Scenario

Case: A bank has a global “Core Banking” service (Service SLA), IT team crafted a department-level SLA for Retail Banking users (Customer SLA), and a specialized SLA for API access support with fintech partners (Multi-party SLA).

  • You might be asked: "Which SLA ensures 15-minute API response support for external fintech partners?" → Multi-party SLA.
  • Or: "Which SLA covers all internal users needing email access?" → Service SLA.

 

📝 Summary Tips for Foundation Exam

  • Differentiate quickly:
    • Customer vs Service SLA? — Identification: target group vs specific service.
  • Structure matters:
    • Understand multi-level SLA hierarchy (Corporate > Customer > Service).
  • Know the purpose:
    • Multi-party SLAs coordinate across third parties—often tested.

📌 Tip: Draw a pyramid structure in the exam to show multi-level SLA layers visually.

 

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Your SLA Strategy

  1. Memorize formal SLA categories — break them down by scope and purpose.
  2. Create real-world examples linking customer-group vs service-specific needs.
  3. Visualize with a pyramid diagram to reinforce multi-level relationships.
  4. Connect with other ITIL practices—especially Supplier and Service Level Management—for holistic comprehension.


 




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Types of SLA itil, information technology infrastructure library 





Service-based

All customers get same deal for same services

Customer-based

Different customers get different deal (at different cost)

Multi-level

These involve corporate, customer and service levels and avoid repetition
Right Capacity, Right Time, Right Cost!

This is capacity management

Balances Cost against Capacity so minimises costs while maintaining quality of service

Is it available? itil, information technology infrastructure library 

Ensure that IT services matches or exceeds agreed targets

Lots of Acronyms

Mean Time Between Service Incidents

Mean Time Between Failures

Mean Time to Restore Service

Resilience increases availability

Service can remain functional even though one or more of its components have failed
 

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By mastering these SLA types and their interconnections, you’ll gain the confidence to answer Foundation-level questions and discuss SLA strategy professionally. Good luck with your ITIL V4 journey!

 

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