App modernization refers to the process of updating an existing application with new and modern features to better meet user needs.
Companies that have existing legacy applications will typically make the move to modernize the platform infrastructure, architecture, and / or features. Lately, this movement has been to transfer applications to the cloud. Application modernization should be looked at in a strategic lens rather than moving without thought, to ensure that the ROI outweighs the cost to restructuring.
Legacy application is outdated software that has been in a standstill with updates and technical support.
Digital transformation is the modernization of processes within an organization to include new, modern, digital products and services.