Salesforce Platform Developer Practice Exam

What defines Multi-Tenant Architecture?

1. Single code base with unique data for each user

2. Common code base with separate user data

3. Users share their code and data

4. No separation of data

The correct answer is: Common code base with separate user data

Multi-Tenant Architecture is characterized by a common code base where multiple users or organizations share the same application while maintaining their own separate data. This model allows for efficient use of resources, as updates to the application only need to be made once, benefiting all tenants with improvements and new features instantly. Data privacy and security are maintained by ensuring that each tenant’s data is isolated from others, meaning that one user's data cannot be accessed by another user. This architecture is particularly prominent in cloud computing environments, like Salesforce, where a single instance of software serves multiple clients. Each tenant's data resides in distinct databases or logical partitions, ensuring that data integrity and confidentiality are preserved while capitalizing on shared infrastructure. In this context, the other choices do not accurately describe multi-tenant architecture. Having a single code base with unique data for each user suggests a more customized environment that doesn't leverage shared resources effectively. The idea of users sharing their code and data goes against the core principle of maintaining data security and isolation in a multi-tenant setup. Lastly, no separation of data would completely violate the tenets of multi-tenancy, as this would create a chaotic environment where one tenant could easily access another's data, leading to significant security and compliance issues.