Explore the software lifecycle
Follow an export feature from its requirement to operation. Inspect the owner, evidence, and decision at each stage.
Explore the stages
LEARN THROUGH PRACTICE
Practice lab
Practice one work decision at a time. Each exercise gives you a situation, instructions, and an explanation of the result.
Fictional examples. No account required. Results are calculated in your browser.
New to the topic? Start by following one feature through its lifecycle. In the calculators, try worked examples before entering your own values. The code and Taiga exercises give feedback on your decisions.
Plan a risk review
Change the data, permissions, and consequences of a task. See which questions and controls need attention.
Assess a scenario
Review an AI-generated change
Inspect a short endpoint. Decide what evidence you need before you accept the change.
Inspect the code
Compare build and buy costs
Include setup, operation, and retained engineering work. Change the assumptions and compare the result.
Compare scenarios
Test recovery against RTO and RPO
Change the recovery stages and data gap. See why faster restoration does not always mean less data loss.
Test recovery objectives
Check your operating model
Identify missing owners, controls, and recovery evidence. Create a practical action list.
Create an action list
Practice a Taiga workflow
Make six decisions for an internal expense app. Learn when to add context, check assumptions, and require human approval.
Start the walkthrough