How do I evaluate whether a business internet provider is credible and unbiased about SLA terms and uptime claims?

To judge whether a business internet provider is credible and not overselling SLA/uptime claims, look for verifiable evidence, precise definitions, and enforceable terms—not marketing language.

1) Check what the SLA actually guarantees

Ask for the full SLA document and look for:

• Uptime definition
  Is uptime measured for:

  • the last-mile circuit only?
  • the provider’s whole network?
  • internet transit only?
  • the router/CPE included or excluded?

• Measurement method

  • How is downtime measured?
  • Is it from provider monitoring only?
  • Do they accept customer timestamps and logs?
  • What qualifies as an outage vs. maintenance?

• Exclusions Common carve-outs that can make an “uptime guarantee” less meaningful:

  • scheduled maintenance
  • force majeure
  • issues in customer-owned equipment
  • power failures at your site
  • DDoS or security incidents
  • upstream carrier issues
  • “network impairment” that isn’t a full outage

• Service credit terms

  • Are credits automatic or must you request them?
  • Are credits pro-rated or capped?
  • Is the credit meaningful, or just a small percentage of the monthly fee?

A provider that is credible will define these clearly and in plain language.

2) Separate “uptime claim” from “SLA-backed uptime”

Many providers advertise “99.99% uptime,” but the important question is whether that is:

• a marketing claim
• a best-effort statement
• or a contractual SLA with credits

If it’s not in the contract, treat it as marketing only.

A useful rule:

• Marketing claim = interesting
• Contractual SLA = enforceable
• Independent measurement = trustworthy

3) Ask for historical performance data

Request:

• uptime reports for the last 12–24 months
• outage summaries by month/quarter
• mean time to repair (MTTR)
• number of major incidents
• root cause breakdowns

Then compare:

• reported uptime vs. SLA
• frequency of short outages
• repeated incidents in the same region or network segment

If they won’t share any historical data, that’s a caution sign.

4) Look for independent verification

Don’t rely only on their own statistics. Check:

• third-party reviews from other business customers
• regulator or consumer complaints, if applicable
• outage trackers or incident reports
• performance monitoring from peers or public benchmark data
• financial filings, if the company is public

You want evidence that their claims match reality.

5) Evaluate how they define “credible”

A credible provider usually has:

• a clear network architecture and redundancy design
• published SLA terms with specific exclusions
• realistic uptime claims
• transparent outage reporting
• responsive support and escalation paths
• a history of honoring credits or contractual remedies

Be skeptical if they:

• promise “100% uptime”
• give vague answers like “industry-leading reliability”
• hide behind broad exclusions
• refuse to provide written SLA terms
• claim uptime without defining the measurement window

6) Compare claims against the infrastructure they actually have

Ask:

• Is the connection fiber, cable, wireless, or leased line?
• Is there path redundancy?
• Are there diverse upstream carriers?
• Is the local loop shared?
• Is there a backup route or failover option?
• Is the SLA based on a single circuit or an end-to-end design?

If a provider claims very high uptime on a design with no redundancy, that’s a red flag.

7) Ask the right questions directly

Useful questions:

1. “What exactly is covered by the SLA?”
2. “What events are excluded?”
3. “How do you measure downtime?”
4. “Are service credits automatic?”
5. “Can you share the last 12 months of outage statistics?”
6. “Do you provide root cause analysis after incidents?”
7. “What percentage of outages are due to your network vs. customer equipment?”
8. “Are your uptime claims independently audited?”

Their willingness and precision in answering these matters as much as the answers.

8) Watch for biased framing

Providers can make themselves look better by:

• using a very narrow uptime scope
• excluding most common outage causes
• quoting uptime over a short period
• using “planned maintenance” to avoid counting downtime
• measuring only backbone availability, not your actual service

Ask them to define claims in a way that a neutral auditor would accept.

9) Review the contract with a technical and legal lens

Before signing, have someone review:

• SLA scope
• remedies
• termination rights for repeated outages
• service credit limitations
• force majeure clauses
• notice requirements
• dispute process

A strong SLA is only useful if the remedy is practical and the language is enforceable.

10) A simple credibility test

A provider is more likely credible if they can provide:

• written SLA terms
• precise uptime definitions
• transparent exclusions
• historical performance data
• independent references
• measurable remedies

They are less credible if they rely on:

• vague marketing claims
• “trust us” language
• no written measurement method
• broad exclusions
• refusal to share data

If you want, I can also give you:

1. a vendor evaluation checklist, or
2. a set of red-flag questions you can send to providers by email.