This document discusses Software as a Service (SaaS) and Database as a Service (DBaaS). It defines SaaS as software deployed 100% over the internet, and notes that it is the application layer of the cloud computing model. DBaaS delivers database functionality as a service internally or externally. Customers are adopting DBaaS to gain optimization, support multiple development environments without resource limitations, and solve challenges around data growth and application changes. Both SaaS and DBaaS offer scalable, on-demand access to software and databases without the need for in-house infrastructure management.