Question 1

What is sprint velocity?

Accepted Answer

Sprint velocity is the average story points completed per sprint. It is used to forecast delivery dates from backlog size. If a team averages 40 points per 2-week sprint and the backlog has 200 points, delivery is roughly 10 weeks away. Velocity stabilises after 3-5 sprints.

Question 2

What is technical debt?

Accepted Answer

Technical debt is the implied cost of rework caused by choosing a quick solution now instead of a better approach. It accrues interest - the longer it remains, the harder it is to fix. SQALE and similar frameworks quantify tech debt as remediation time in developer-hours.

Question 3

What does 99.9% uptime mean in practice?

Accepted Answer

99.9% uptime (three nines) allows 8.76 hours of downtime per year, 43.8 minutes per month, or 10.1 minutes per week. 99.99% (four nines) allows 52.6 minutes per year. 99.999% (five nines) allows just 5.26 minutes per year.

Question 4

Are these software development tools free?

Accepted Answer

Yes - completely free, no sign-up required. Results export to CSV or PDF.

Free Software Development Tools & Calculators

Software dev calculators for engineering teams

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