Answers
What are feature flags?
In short
Feature flags are runtime configuration that allow features to be turned on or off — per environment, per cohort or per request — without redeploying code.
Short answer
Feature flags are runtime configuration that allow features to be turned on or off — per environment, per cohort or per request — without redeploying code.
What this actually means in practice
They enable trunk-based development, progressive rollouts, fast rollback and A/B testing. They also accumulate technical debt: define a removal SLA for every flag and enforce it.
The most common pitfall
Hundreds of stale flags producing untested combinations of code paths.
What to do next
Audit your flag set; retire anything older than 90 days that isn't actively used.
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.