Service credits for missed targets. A two-hour response time on critical incidents. Uptime of 99.9%. These are the terms you find in the service level agreement (SLA) in the SaaS contract a vendor just sent over.
But will these SLA terms hold up if the system goes down during a launch, a sales push or a payroll run?
An SLA agreement can be a useful accountability tool, but that’s only true if the details stand up under pressure. This guide explains what SLAs are and how to navigate them.
What is an SLA?
An SLA is a service level agreement that often appears in large vendor contracts or master services agreements. SLAs can also be attached as exhibits. Either way, SLAs aim to turn vague promises about reliability and service quality into measurable commitments: A promise to provide “reliable service” or “prompt support” sounds positive, but lacks enforceable details, such as how quickly your support ticket will get a response or what happens if the vendor fails to deliver.
In broad strokes, the SLA defines:
- What the provider promises
- How the parties will measure performance
- The responsibilities of each party
- What happens if the provider falls short of agreed service targets
Modern SaaS contracts can also include the terms service level objective (SLO) and service level indicator (SLI). While the SLA is the contract-level commitment between the provider and the customer, the SLO is the provider’s internal target for meeting that commitment. And the SLI is the metric to gauge whether SLA commitments are being met, such as uptime percentage or ticket resolution time.
An SLA is only as strong as its SLIs and the remedies triggered if they’re unmet. That’s why it’s important to closely examine (and negotiate) SLAs and the metrics and remedies they invoke.
What to include in an SLA
SLA terms fall into three primary categories:
- Service scope and operating terms define what’s included and what’s expressly excluded, as well as more operational information such as service hours and how updates are handled.
- Roles and procedures terms cover what the provider is responsible for and what the customer must do to get support or invoke remedies. This section often covers incident severity levels, such as P1, P2, and P3 issues. Termination terms often make an appearance, as well as security and compliance requirements and escalation paths.
- Penalty and remedy structure terms define what happens if the provider misses a service level. Remedies can vary widely but often include service credits and termination rights. Other common remedies include enhanced support and expedited resolution.
- Most SLA disputes arise because the agreement failed to define something clearly. Did a certain incident qualify as an outage? Was a support ticket truly “critical”? This can stem from overly broad exclusions, undefined severity levels, missing escalation paths, and unclear reporting rules, as a few examples.
SLA metrics that matter most
Useful SLA metrics must be measurable and tied to business impact. Metrics that fit that bill often fall into two broad categories: service availability and support speed and service quality and operational performance.
Service availability and support speed
SLA contracts usually describe availability as an uptime percentage between 99% and 99.99%—a range that looks narrow but isn't in practice. For a product supporting core operations, a half-point difference in uptime can easily translate to millions in lost revenue.
Beyond the percentage, the way the SLA defines uptime is key. For example, do scheduled maintenance and force majeure events factor into the uptime calculation? These are reasonable carve-outs, but they can also make the top-line uptime number less meaningful.
On support speed, an issue to watch is whether the SLA promises a response or a resolution. A response can be a simple acknowledgment within a defined time frame, not necessarily a fix.
The SLA agreement should define severity levels for these issues, as it’s reasonable to expect a different support process for critical outages than for minor support tickets. The SLA should spell out what each level means, who decides the classification, how fast the provider has to act.
Keep coverage hours in mind, too. If that lightning-fast response time promise only applies to business hours, what happens when the system goes down on Friday evening? Make sure the coverage applies when you’ll truly need it.
Service quality and operational performance
SLAs in business environments often stick to uptime and support speed, but some go deeper. That’s particularly common when the vendor offers a service or platform that’s heavy on support or directly involved in the user experience.
The right metric depends on the service. For instance, you might measure a customer support provider’s performance by first-call resolution. Meanwhile, throughput and error rate might be appropriate metrics for a platform that handles transactions.
The metrics in this arena are less universally applicable than uptime and support. But that doesn’t make them less important. If poor service quality would hurt your customers or create operational risk, the SLA ought to address that risk head-on.
The same adage applies in this metrics category: The SLA should be clear on the metrics before it’s aggressive on actual numbers. That’s how SLAs prevent disputes and keep things moving.
How to review and negotiate an SLA
Review the draft for scope, targets, and governance
Scope comes first. Make clear the services the SLA covers and those it excludes. Exclusions deserve close attention. For example, they often decide whether an outage counts against the provider.
After scope, check the targets. Uptime, response time, and resolution time should be measurable and they should match the business impact of the service you’re contracting with. For instance, a low-risk internal tool doesn’t need the same high commitment as a platform that enables user access or revenue operations.
While you’re considering targets, also look at remedies. Some SLAs offer service credits that mean very little because they’re so small. Others make credits discretionary; that weakens the remedy from the start.
Then, understand how this is all governed according to the SLA:
- How is performance monitored?
- How are missed targets reported?
- How are disputes handled?
If you can’t discern this structure in the SLA, you may have a remedy on paper but no practical way to use it. Also watch for broad exclusions and unclear escalation procedures.
Negotiate flexibility, escalation, and revision rights
The most important goal in SLA negotiations is making the service levels realistic and verifiable. It’s not about pushing every promised number as high as possible. Think of it this way: If uptime is unclearly defined, a stronger uptime percentage means less. And if a vendor merely has to acknowledge the issue, is a faster response time all that helpful in the end?
Escalation rights are often worth scrutinizing. When ordinary support doesn’t solve the problem, what happens? Flexibility in the form of revision rights, which allow changes to the agreement under defined conditions, can matter a lot if the service becomes more important over time.
And if you have hyper-specific security or regulatory obligations, it’s often worth negotiating those terms directly in the SLA rather than leaving them up to general support language.
So negotiate for clarity and verifiability. And negotiate when the SLA doesn’t adequately reflect the risk of operational harm in its terms.
Don’t let weak SLA terms slip through
The problem is rarely that an SLA is missing. They’re deep inside most SaaS contracts and vendor agreements. The problem is usually about the SLA terms. Broad exclusions cheapen promises around uptime. Vague escalation language slows responses when speed matters the most.
Crosby redlines contracts and flags SLA terms that may not hold up under pressure. Custom AI agents review the contract, and barred attorneys oversee the work. With turnaround times of under four hours, Crosby catches SLA issues a fast deal cycle can miss.
Talk to Crosby before you sign your next vendor contract.
FAQs
What’s the difference between an SLA and a contract?
An SLA can be a contract on its own, or it can be inserted into a contract with a broader scope. For instance, the SLA in a SaaS contract could be a section, exhibit, or attachment.
Should an SLA be a separate document or embedded in the main contract?
Either structure can work. What matters more is whether the SLA is easy to enforce and clearly incorporated into the business agreement.
Are SLA service credits the only remedy I get for missed performance?
Often, but not always. Many SLAs will indeed say service credits are your lone remedy. But it’s often possible—and a good idea—to negotiate additional or stronger remedies.
When should I negotiate an SLA?
If the service affects revenue, customer access, operations, security, or compliance, it’s likely worth negotiating the SLA. A standard SLA may work just fine for a low-risk tool. But for a vendor key to business operations, smaller wording choices might be worth discussing.