How it works…

Dependencies can be service-to-service; for example, a web application depends on a frontend web server and a backend database. Dependencies can be service-to-infrastructure; for example, a web application requires a static IP address and a minimum of 10 MB of network bandwidth.

Physical and infrastructure dependencies are generally easier to discover and are commonly documented. Applications will have dependencies, which include server resources, network resources, and storage resources. Infrastructure dependencies that are not documented are often readily discovered as part of the current state assessment. The following table is an example of how physical application dependencies can be documented:



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