Answers
What is an error budget?
In short
An error budget is the allowed amount of unreliability over a window — derived from your SLO — that engineering teams can spend on releases, experiments and risk.
Short answer
An error budget is the allowed amount of unreliability over a window — derived from your SLO — that engineering teams can spend on releases, experiments and risk.
What this actually means in practice
When the budget is healthy, ship faster; when it's exhausted, slow down and improve reliability. It's how SLOs become operating tools rather than dashboards.
The most common pitfall
Reporting on error budgets without actually changing release behaviour when they're exhausted.
What to do next
Define one error-budget policy and enforce it for one quarter.
Frequently asked questions
Does Forth Systems help with this?
Yes — Forth Systems works with banks, payment institutions, insurers and infrastructure operators on exactly this kind of work. Engagements start with a fixed-scope assessment so you see the shape before committing.
How experienced is the team?
Engagements are staffed by named, UK-based senior engineers — not a rotating offshore pool. References from the second line of comparable clients are available on request.
Where are you based?
Edinburgh-based, delivering UK-wide with onsite presence in London and across Scotland as required.
How fast can we start?
Most engagements start within 2-4 weeks of a signed SoW, faster where an existing supplier framework is in place.