21 lines
782 B
Markdown
21 lines
782 B
Markdown
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---
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layout: pattern
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title: Service Layer
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folder: service-layer
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categories: pattern_cat
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tags: pattern_tag
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---
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**Intent:** Service Layer is an abstraction over domain logic. Typically
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applications require multiple kinds of interfaces to the data they store and
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logic they implement: data loaders, user interfaces, integration gateways, and
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others. Despite their different purposes, these interfaces often need common
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interactions with the application to access and manipulate its data and invoke
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its business logic. The Service Layer fulfills this role.
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**Applicability:** Use the Service Layer pattern when
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* you want to encapsulate domain logic under API
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* you need to implement multiple interfaces with common logic and data
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