SLAdvisor.dev
Service criticality

How critical is this service to your business?

Downtime tolerance

How much downtime is acceptable for your users?

Support window

What support coverage does this service require?

Infrastructure budget

What budget can you allocate to infrastructure and operations?

RTO (Recovery Time Objective)

How quickly must the service recover after an outage?

RPO (Recovery Point Objective)

How much data loss can you tolerate?

SLA recommendation

Score:

Allowed downtime

Yearly
Monthly
Weekly

Relative cost

Multiplier

Compared to a baseline, non-redundant infrastructure.

Required architecture

Penalties (service credits)

Measured monthly

Credits are capped at 30% of monthly invoice (industry standard).

Exclusions: scheduled maintenance, force majeure, customer-caused incidents.

Credits apply to future invoices — not cash refunds.

Tier comparison

Tier SLA Cost

Cloud provider SLAs

Service AWS GCP Azure

● Compatible with your target tier  ·  ● Lower SLA than your target (needs attention)

Composite SLA formula

SLAcomposite = SLA1 × SLA2 × … × SLAn

Example: Compute (99.99%) × Database (99.95%) × Load Balancer (99.99%) = 99.93%

Sources: AWS SLA, Google Cloud SLA, Azure SLA