Is this an advantage of microservice architecture?

No, microservice architecture does not inherently make identities take up less space in the cloud. Microservices are primarily focused on improving scalability, resilience, and modularity by breaking down an application into smaller, independent services. While this architecture may optimize resource usage and improve performance, it does not specifically reduce the storage space required for identities or data. Data storage concerns are more related to optimization techniques like data deduplication or compression rather than the architecture style itself.

References:

SailPoint IdentityNow Microservices Architecture Guide.

SailPoint IdentityNow Cloud Storage and Data Management Documentation.