U Question 18 3 pts We should prevent likely changes from rippling through a service by introducing special modules whose sole purpose is to localize and isolate changes to the environment, to other services, or to third-party software or libraries. True False Question 19 3 pts Although NIST (The National Institute of Standards and Technology) defines three types of cloud services, including SaaS, PaaS, and laas, only PaaS and laaS can be used in a DevOps context. O True O False