subject: Software validation and testing

read and solve the qusetion?

there are different "services" registered on the net (like travel service, hotel booking services, etc.). Consider the testing challenges of putting together a "bigger" service composed of these atomic services. - For example, consider putting together a comprehensive travel booking that uses airline booking from (the existing) travel service, and from the (existing) hotel booking service. - What kind of testing challenges should you expect when you put together and use such composite services? Consider all phases/types of testing, given