Change feed is a pretty amazing feature. Once you make the changes, they are quickly read for you, and then you also have geo-replication. You can do a lot of things in your region, and the same regions can be replicated all over the world.
Microsoft Azure Cosmos DB is a highly scalable database offering seamless scalability and fast data processing. It provides robust real-time analytics with low latency and supports global synchronization for optimal performance. However, SQL queries and procedures are challenging to write, and its pricing model is costly. Technical support is often insufficient, and integration with platforms like Databricks and MongoDB requires improvement. Document size limitations and complicated management of large data sets are notable challenges.