Is the statement "Redundancy isn't needed in SaaS apps" valid?

The statement "Redundancy isn't needed in SaaS apps" is not valid because redundancy is a fundamental aspect of building reliable and resilient software systems, including Software as a Service (SaaS) applications.

SaaS applications serve many users and often process critical data, so ensuring high availability and minimal downtime is essential for maintaining user trust and business continuity. Redundancy helps to achieve these goals by providing backup systems or components that can take over in case of a failure. This includes not only data redundancy, such as backups and failover databases, but also infrastructure redundancy, such as load balancing across multiple servers or data centers.

A lack of redundancy could lead to single points of failure, making the application vulnerable to outages that could affect users and disrupt operations. Therefore, building redundancy into SaaS applications is crucial for ensuring they can handle failures gracefully and continue to operate effectively even in adverse conditions.