Which statement represents a disadvantage of a tightly coupled service architecture?

A tightly coupled service architecture refers to a design where components are highly dependent on each other, meaning that they are intricately linked in their functioning. This architectural style presents several disadvantages, one of which is decreased flexibility during updates.

When components are tightly coupled, making updates or changes to one service often necessitates changes to other interconnected services. This is due to the dependencies that exist; if one service's functionality changes, the other services that rely on it may also require modification to maintain compatibility. This interdependency can lead to longer update cycles, increased downtime, and more significant testing efforts to ensure that the overall system continues to function correctly after changes are made.

In contrast, a loosely coupled architecture allows for greater flexibility since components can be modified or updated independently with minimal impact on other services. This architecture supports more agile development practices and can be more responsive to changing business needs.

The other choices illustrate aspects typically considered advantages or neutral characteristics of service architecture. For instance, increased system resilience, enhanced service interdependence, and improved performance management are generally seen as positive traits rather than disadvantages associated with tightly coupled systems.