Why is Alter table important in Laravel applications, and what problem does it solve for developers?

Why is Alter table important in Laravel applications, and what problem does it solve for developers? The key reason to understand alter table is that Laravel applications are usually composed of several layers that must work together predictably. Later migrations can add, change or remove columns and indexes as the schema evolves. Ignoring that boundary can lead to duplicated logic, poor security, unnecessary database work, or code that is difficult to test. Why it matters in practice: Migrations describe versioned database schema changes so application teams can create and evolve tables consistently across environments. The specific focus here is alter table: Later migrations can add, change or remove columns and indexes as the schema evolves. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.