CT-ATLaS is for the person who answers for testing across several delivery teams at once, such as a head of testing in a scaled agile programme or a quality coach serving a dozen squads. It is not for a tester inside one Scrum team who wants sharper techniques, or an engineer who builds automation frameworks; ISTQB has other exams for both. The paper is 40 questions in 120 minutes, and you need 47 of 71 points.

Everything below comes from ISTQB's own v2.0 syllabus and its certification page, both read in October 2026. It tells you who should sit the paper, what you must hold before booking, what each of the five chapters asks you to do, and in what order an experienced lead can study. The vendor's wording is quoted where it matters; everything else is explained in plain terms.
Which roles gain from CT-ATLaS, and which should choose another ISTQB exam?
ISTQB describes the certificate as aimed at people who work in an organisation that is pursuing agility at scale or business agility, and who already understand agile and agile testing. Its list of suitable roles is long: Test Manager, Head of Testing, Test Analyst, Quality Engineer, Quality Assurance, Quality Coach, a member of an agile team, a member of the leader group of several agile teams, Project Manager, Release Train Engineer and Scrum Master.