The image shows the a Local KVStore on the left and a Remote KVStore on the right side, connected with the help of a Cross-Region Service. There are three shards in the Local KVStore and four shards in the Remote KVStore. The Cross-Region Service shows two NoSQL Publishers. The NoSQL Publisher with ID (2,0) connects shard 1 and shard 3 of the Remote KVStore to all the shards of the Local KVStore. Another NoSQL Publisher with ID (2,1) connects shard 2 and shard 4 of the Remote KVStore to all the shards of the Local KVStore. The image also shows the method OnNext() on both the publishers.