Some of the key features of docker Swarmareas follows:
Compatible: Docker Swarm is compatible with standard Docker API.
High Scalability: Swarmcan scale up to as many as 1000 nodes and 50000 containers. There is almost no performance degradation at this scaleinDocker Swarm.
Networking: Swarmcomes with support for Docker Networking.
High Availability: We can create a highly available system with Docker Swarm. It allows us to create multiple master nodes so that in case of failure, another node can take over.
Node Discovery: In Docker Swarm, we can add more nodes and the new nodes can be found with any discovery service like etc or zoo keeper etc.