SLA: The Agreement That Defines the Quality of Your IT Support
If your business contracts (or is considering contracting) an IT support service, there is one document that should be non-negotiable: the SLA or Service Level Agreement. Without a clear SLA, any service promise is just words.
An SLA is a formal contract between your company and your IT support provider that establishes, in measurable and verifiable terms, exactly what service you will receive, within what timeframes, and what happens if those commitments are not met.
Industry studies show that businesses without formalised support contracts and SLAs take on average 3 to 5 times longer to resolve critical incidents than those that have them. The difference is not just time — it is money, data at risk, and customers waiting for a response that does not come.
SLA vs. Maintenance Contract: What Is the Difference?
These two terms are often confused. The distinction is important:
- Maintenance contract: describes what services are provided (monitoring, updates, support…).
- SLA: describes how those services are delivered and with what measurable quality guarantees.
A maintenance contract without an SLA is like hiring an electrician without specifying how quickly they need to arrive when there is a power cut. They might come in 20 minutes or in three days: without an SLA, there is no commitment.
Ideally, both documents go together: the contract defines the scope of the service, and the SLA defines the guaranteed quality levels.
What an IT Support SLA Must Include
Response Times
The response time is the maximum period from when you report an incident until a technician begins working on it. Do not confuse response time with resolution time: response means someone is already dedicated to your problem, not that it is solved.
A professional SLA defines response times according to incident priority:
| Priority | Description | Response Time |
|---|---|---|
| Critical | System down, business paralysed | 30 minutes - 1 hour |
| High | Degraded service, multiple users affected | 2 - 4 hours |
| Medium | Individual problem affecting work | 4 - 8 business hours |
| Low | Consultation or improvement with no immediate impact | 24 - 48 business hours |
Resolution Times
In addition to when support begins, the SLA should indicate how long it takes to resolve the problem. Resolution times are typically broader and depend on complexity:
- Critical incidents: target resolution in 4-8 hours
- High incidents: resolution within 1 business day
- Medium incidents: resolution within 2-3 business days
- Low incidents: resolution within 5 business days
Coverage Hours
Defines when you can contact support and when you will be attended:
- Standard hours: Monday to Friday, 9:00-17:00
- Extended hours: Monday to Friday, 7:00-22:00
- 24/7: continuous coverage, including public holidays
For most SMEs in Tenerife, standard hours with an emergency service outside hours is usually the most balanced option between cost and protection.
Communication Channels
The SLA must specify how you can report incidents and what channels are available:
- Phone: for emergencies and direct communication
- Email/ticket: for documented incidents with tracking
- Web portal: for checking incident status
- Chat: for quick queries
Metrics and Reports
A good SLA includes metrics that allow you to verify compliance:
- Response time compliance rate
- Average resolution time by priority
- Service availability (guaranteed uptime)
- Number of recurring incidents (indicates underlying problems)
These metrics should be delivered in a periodic report (monthly or quarterly) that you can review.
Penalties and Compensation
What happens if the provider fails to meet the SLA? A serious agreement includes consequences:
- Invoice discounts for non-compliance
- Service credits for the following period
- Right to cancel without penalty after repeated non-compliance
SLA Levels According to Business Type
Not all businesses need the same level of service. There is a reasonable gradation based on the criticality of systems and the impact of interruptions:
Basic SLA (SMEs with low IT criticality)
Suitable for businesses where IT systems are important but not their primary function: retail shops, small offices, professional practices with few computers.
- Response within 4-8 hours for medium incidents
- Standard business hours coverage
- Remote support priority, on-site available on request
Standard SLA (SMEs with medium IT dependency)
For companies where systems are necessary to operate: clinics, travel agencies, architecture studios, small service companies.
- Response within 1-2 hours for high incidents
- Extended coverage until 20:00
- Remote support with guaranteed same-day on-site assistance
Premium SLA (businesses with high dependency or critical data)
For sectors where a minute of downtime has direct revenue impact or security implications: hotels, medical clinics, law firms with sensitive data, logistics companies.
- Response within 1 hour for any high incident
- 24/5 or 24/7 coverage as needed
- Dedicated or on-call technician
How to Review and Audit Your SLA Compliance
Signing an SLA is the first step. Verifying that it is being met is equally important.
Request Monthly Reports Systematically
Each month, ask your IT provider for a report including: number of incidents by priority, actual average response time versus the SLA commitment, incidents that exceeded the agreed time and their cause, and identified trends.
A trustworthy provider will deliver these reports proactively, without you having to ask.
Keep Your Own Incident Log
From your side, maintain a basic log of when you report each incident and when you receive a response. This allows you to compare the provider’s report data with your own experience.
Review the SLA Annually
Your business needs change. What was sufficient two years ago may not be today. Review the SLA terms at least once a year and negotiate any necessary adjustments.
Why Your Business Needs an SLA
Clear Expectations for Both Parties
Without an SLA, the relationship with your IT provider is based on subjective perceptions. You think they are taking too long; they believe they are responding reasonably. With an SLA, there are concrete numbers that eliminate ambiguity.
Business Protection
An SLA guarantees that critical incidents are attended with the urgency they deserve. When a downed system is costing you money every minute, you cannot rely on the provider’s goodwill: you need a written commitment.
Cost Control
Knowing exactly what is included in the service protects you from surprise invoices. The SLA should specify what services are covered and which are billed separately:
- Included: incidents, preventive maintenance, monitoring, updates
- Not included (with defined rates): new projects, expansions, hardware
Foundation for Continuous Improvement
Periodic SLA reports reveal trends: if a type of incident recurs constantly, it indicates an underlying problem that needs to be resolved. Without data, systematic improvement is impossible.
Signs of a Poor SLA
Be wary if your support contract shows any of these characteristics:
- No defined times: “we will respond as soon as possible” is not a commitment
- No priority distinction: a downed server is not the same as a question about Excel
- No metrics: if it is not measured, it cannot be improved or disputed
- No penalties: an SLA without consequences for non-compliance is just a statement of intent
- Excessive fine print: exclusions that hollow out the commitments
Key Questions Before Signing an SLA
Before contracting an IT support service, make sure you get clear answers to these questions:
- What is the guaranteed response time for critical incidents?
- What coverage hours does the service include?
- How are incidents reported and tracked?
- What reports will I receive and how often?
- What happens if the agreed times are not met?
- What services are included and which have additional costs?
- What is the availability commitment (uptime)?
- Is there a minimum contract period? What are the cancellation terms?
An SLA That Works in Practice
At SOINTE, we believe an SLA should be a living document that reflects the reality of the service, not a piece of paper that is signed and filed away. Check out our technical support service with clear SLAs: response in less than 1 hour for critical incidents and less than 4 hours for standard incidents. Complement your support with a preventive maintenance plan that reduces incidents before they occur.
If your business in Tenerife is looking for IT support with real, verifiable commitments, contact us. We will explain exactly what our service includes, within what timeframes, and how we measure it.