Companies such as MongoDB and Confluent have built cloud-based solutions like MongoDB Atlas and Confluent Cloud that work across all three major cloud providers, enabling developers to build modern cloud-based applications with data in motion. To get started with MongoDB Atlas and Confluent Cloud, users can register for a free trial of Confluent Cloud and create a new Kafka cluster, followed by setting up the source and sink connectors in Confluent Cloud, generating test data, configuring the sink connector, and verifying the data arrival at the sink. With fully managed solutions like MongoDB Atlas and Confluent Cloud, users can focus on solving business problems rather than spending time on infrastructure configuration and maintenance, and can leverage features like Atlas Search, Online Archive, and MongoDB Charts to further enhance their data management capabilities.