> [!abstract] an entity service is a set of [[CRUD]] operations on a business entity such as _Person_, _Location_, _Contract_, _Order_, etc. ## Notes It’s an anti-pattern because it creates high semantic and operational coupling. Edge services suffer from common-mode failures through their shared dependency on the entity services. Changes or outages in the entity services have large “failure domains.” ## Sources https://www.michaelnygard.com/blog/2018/01/services-by-lifecycle/ by [[Michael Nygard]]