Monolithic applications are applications where all of the database and business logic is tied together and packaged as a single system. Since, in general, monolithic applications are deployed as a single package, deployments are somewhat simple but painful due to the following reasons:

• Deployment and release as a single concept: There is no differentiation between deploying build artifacts and actually making features available to the end user. More often, releases are coupled to their environment. This increases the risk of deploying new features.
• All or nothing deployment: All or nothing deployment increases the risk of application downtime and failure. In the case of rollbacks, teams fail to deliver expected new features and hotfixes or service packs have to be released to deliver the right kind of functionality.