Picking a database is a long-term commitment, whether for an application or a data warehouse project. Operational databases are designed mainly for application or microservices development and offer various features such as data structure flexibility, query patterns, consistency, deployment options, maturity, high availability and disaster recovery, scalability, mobile and edge capabilities, security, and cost considerations. Cloud providers like AWS, Google Cloud, and Microsoft Azure offer a variety of DBaaS offerings, each focused on specific capabilities. The choice of database can significantly impact the development process, requiring consideration of factors such as data structure flexibility, query patterns, consistency, deployment options, maturity, high availability and disaster recovery, scalability, mobile and edge capabilities, security, and cost. Ultimately, choosing the right cloud database platform is crucial for supporting important applications and aligning with application requirements.