Which of the following ensures that there is enough space for vendors to install their programs and run the software they will be managing for various SaaS products?

Network isolation controls traffic flow between segments but does not allocate or guarantee storage space for vendor programs.

Laws and regulations define compliance requirements but are not a technical mechanism for allocating space or resources to vendors.

Multi-tenancy describes the architecture of sharing a single infrastructure across multiple customers; it does not itself guarantee each tenant has sufficient dedicated space.

Data segregation in a SaaS or multi-tenant environment partitions storage and runtime resources so each vendor has its own isolated space to install and execute software. This directly addresses the requirement of ensuring enough dedicated space per vendor without interference from other tenants. It is a foundational principle in cloud environments for both resource allocation and security boundary enforcement.