GWGreywake Use-Case Guides
Flagship use case · Operations & Resilience

SLA & Downtime Impact Calculator

Separate contractual SLA and operational impact, handle exclusions and overlapping outages, and track internal SLO error budgets.

App v2.0.0Site v6.2.0Local by default
Interface preview

Working application structure

This representative capture shows the application shell and primary workspace. Actual results depend on the information entered and the workflow completed.

SLA & Downtime Impact Calculator application interface
Representative application interface
Desktop viewport · representative interface state
Open live application →
Visible methodAssumptions and record logic remain reviewable.
Local-first postureData handling is stated in the application.
Portable outputExports support review and continuity.
Explicit boundariesLimitations are part of the product evidence.
User and problem

Where the tool fits

Designed for: Service owners, operations leaders, vendor managers, finance partners, and reliability teams.

Problem addressed: Contractual availability, internal reliability targets, and business impact are often mixed together, producing misleading downtime and financial conclusions.

Core workflow

From input to decision-ready output

FrameStructureAnalyzeExport
1

Enter the service period, SLA target, internal SLO, revenue or productivity assumptions, and outage records

Enter the service period, SLA target, internal SLO, revenue or productivity assumptions, and outage records.

2

Classify excluded time and overlapping outages so total impact is not double-counted

Classify excluded time and overlapping outages so total impact is not double-counted.

3

Compare contractual position, error-budget consumption, and operational impact; then export the analysis

Compare contractual position, error-budget consumption, and operational impact; then export the analysis.

Method

Transparent calculation and record logic

The methodology is intentionally visible so users can challenge the assumptions and validate the result against authoritative evidence.

How the application works

  • Calculates availability from the service period and qualifying downtime after configured exclusions.
  • Consolidates overlapping outage intervals before calculating duration to avoid double-counting.
  • Keeps contractual SLA position separate from internal SLO error-budget use and business-impact estimates.
Illustrative output
Contractual availability: 99.92%
SLA target: 99.90% · Within target
SLO error budget remaining: 41%
Estimated operational impact: $18,400
Boundaries

What the result does not prove

  • Contract language, maintenance exclusions, credits, and measurement sources must be validated against the governing agreement.
  • Financial impact is an estimate based on entered assumptions, not an accounting determination.
  • The tool does not ingest monitoring data or prove causation.
Working data remains local to this browser unless the application explicitly describes an external request or the user exports a file. Browser storage can be lost when data is cleared or the device changes.
Organizational fit

Use the method as-is or adapt it to your operating model.

Greywake can tailor fields, terminology, controls, calculations, exports, and deployment requirements. The inquiry link identifies this guide but does not transmit application data.

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