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Digital accessibility stopped being optional long before most companies noticed. The European Accessibility Act came into force in June 2025. WCAG 2.2, with Level AA as the practical baseline, is now the standard that regulators actually reference.

Software today changes very fast. Features are constantly added, bugs are being fixed, and systems are regularly updated weekly by various companies. For this reason, it often becomes challenging for developers to know whether their product is improving or causing unintended errors with every new modification.

Isolated testing of components no longer guarantees the desired software quality. Assembly testing in software lets you verify that the interconnected modules of complex systems operate cohesively and without unexpected issues under pressure and other real-world conditions. In a nutshell, it serves as a method of early issue detection and naturally fills the gap between unit and system testing.