Glossary
abstract environment configuration: variables like IP addresses and server names need to be abstracted so that configuration files only contain placeholders and not the actual values.
abstraction layer: an abstraction layer decouples two layers of architecture so that they can evolve independently from each other without being tightly coupled and causing dependencies.
access layer: usually a user interface that makes accessing information in the underlying systems easier and more user friendly than direct-access systems.
application programming interface (API): is a set of clearly defined methods of communication between various software components that allows access to functionality from external systems.
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