You can see the features for all Hazelcast IMDG editions in the following architecture diagram.
NOTE: You can see small "HD" boxes for some features in the above diagram. Those features can use High-Density (HD) Memory Store when it is available. It means if you have Hazelcast IMDG Enterprise HD, you can use those features with HD Memory Store.
For more information on Hazelcast IMDG's Architecture, please see the white paper An Architect’s View of Hazelcast.