Test Suite
A test suite is a collection of test cases grouped together, usually because they share a purpose — a regression suite, a smoke suite, an API test suite for one service. Suites are the unit teams actually run and report on, rather than executing hundreds of individual test cases one at a time.
Organizing test cases into suites is what makes large test bases manageable: a smoke suite runs in minutes and gates whether deeper testing happens at all; a full regression suite might run nightly because it's too slow for every commit; a suite scoped to one service or module runs whenever that specific code changes.
Automated test frameworks build suite organization directly into how tests are structured — tags, groups, or file and folder conventions let the same underlying set of test cases be run as different suites depending on context, like a "smoke" tag for the fast subset and a "regression" tag for everything. Suite design is as much a performance and CI-strategy decision as a testing one.
