A/B Testing Service-Level Agreement Calculator FAQ
Answers to common questions about calculating monthly A/B testing platform availability, downtime, SLA targets, and service credits.
Use these answers to understand the calculator's inputs, monthly availability logic, downtime exclusions, estimated credits, and limits.
General SLA questions
Basic concepts used in a monthly availability calculation.
What does a monthly A/B testing SLA measure?
It measures service availability during a billing month, usually as a percentage of total monthly time after defined exclusions.
What is chargeable downtime?
Chargeable downtime is reported outage time that remains after SLA-approved exclusions, such as eligible maintenance, are removed.
What is a service credit?
A service credit is a contractual adjustment that may be available when defined service-level conditions are not met.
Availability and downtime calculations
How the calculator converts an SLA target into measurable results.
How is actual monthly availability calculated?
The calculator divides total monthly minutes less chargeable downtime by total monthly minutes, then multiplies by 100.
How many minutes are in a 30-day billing month?
There are 43,200 minutes in a 30-day month: 30 × 24 × 60.
How much downtime is allowed at 99.9% availability in 30 days?
The allowance is 43.2 minutes, calculated as 43,200 multiplied by 0.1%.
What happens if excluded maintenance exceeds reported downtime?
Chargeable downtime is set to zero rather than becoming negative.
Credits and fee inputs
How the potential service-credit estimate is produced.
How does the calculator estimate a service credit?
It converts excess downtime to hours, multiplies by the entered credit per excess hour, and applies the monthly cap.
What fee should be entered for the monthly service fee?
Use the recurring fee eligible for credits under the agreement, which may not be the entire invoice amount.
Can the estimated credit exceed the monthly fee?
The calculator applies the entered cap and does not produce a fee-after-credit amount below zero.
Why might the provider calculate a different credit?
The agreement may use tiers, rounding, incident aggregation, qualification rules, or a different eligible fee basis.
Accuracy and contract considerations
Important limits when interpreting an estimate.
Does a missed target automatically create a credit entitlement?
Not necessarily. Agreements may require a claim, supporting records, and compliance with timing or eligibility conditions.
Should planned maintenance always be excluded?
No. Exclude it only if the applicable SLA explicitly treats that maintenance as excluded.
Does this result account for partial outages?
Only if the reported downtime input already reflects the minutes that the SLA defines as unavailable or materially impaired.
Can I use this calculation for several incidents in one month?
Yes, enter the aggregate reported downtime if the agreement allows the incidents to be aggregated that way.
How is actual monthly availability calculated?
The calculator divides total monthly minutes less chargeable downtime by total monthly minutes, then multiplies by 100.
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