How do Docker Swarm and Kubernetes container orchestration systems differ in terms of functionality and architecture?

Docker Swarm and Kubernetes are container orchestration systems, but they differ in architecture and functionality.

Docker Swarm:

• Built into Docker, easier to set up and use.
• Supports basic orchestration functions: scaling, load balancing, updates.
• Architecture is based on managers and workers.
• Suitable for small and medium projects with simple requirements.

Kubernetes:

• A more complex and powerful system with rich functionality.
• Supports automatic scaling, self-healing, advanced deployment strategies.
• Architecture includes components: API server, controllers, scheduler, kubelet, etc.
• Has a developed ecosystem and broad support.

In conclusion, Docker Swarm is simpler and faster to start with, Kubernetes is for complex, scalable, and fault-tolerant systems.