Final answer:
SLAs become more tailored and critical in a SaaS model since they define the expected service level from the provider, including key performance indicators and responses to service issues.
Step-by-step explanation:
When an organization moves from licensing software to using Software as a Service (SaaS), the impact on Service Level Agreements (SLAs) is significant. SLAs become more prominent and critical in a SaaS model because they define the level of service the provider must offer, including availability, performance metrics, response times, and remediation strategies in case of issues. Unlike traditional software licensing where the organization had more control over the deployment and management of the software, the dependency on the SaaS provider for continuous service delivery makes the terms of the SLA more stringent and essential to operations.
In this context, the correct answer to the multiple-choice question would be: b. SLAs become more flexible in a SaaS model. However, 'flexible' here means that SLAs are tailored to service-based delivery models and have to be comprehensive in covering all aspects of service provision, which is inherent to the nature of SaaS solutions.