The crossword solutions for the term 'Petting Zoo Sounds' are AWS and BAAS. AWS stands for Amazon Web Services, which is a cloud computing platform that provides a wide range of services such as storage, analytics, and networking. BAAS stands for Backend as a Service, which is a cloud-based service that provides developers with a way to link their applications to backend cloud storage and APIs exposed by back-end applications. Both AWS and BAAS are used to create petting zoo sounds, such as animal noises, music, and other sound effects.