What is a 1st , 2nd and 3rd party libraries?

 In software development, the terms first, second, and third party are also used to describe the relationship between a software project and the libraries or dependencies it uses:

1. First-party library: Refers to a library or dependency that is developed and maintained by the same organization or team that is responsible for the software project. For example, the UIKit framework in iOS development is a first party library because it is developed and maintained by Apple, the same company that develops iOS. 
2. Second-party library: Refers to a library or dependency that is developed and maintained by another organization or team that has a direct relationship with the software project. For example, a company that develops a software project may also develop and maintain a library that is used in that project, making it a second party library.
3.  Third-party library: Refers to a library or dependency that is developed and maintained by an organization or team that is not directly involved in the development of the software project. For example, a software project may use a third party library for a specific feature or functionality, such as a networking library or a database library.

In general, first-party libraries are often preferred because they are developed and maintained by the same team that is responsible for the software project, which can make them more reliable and easier to integrate. Second-party libraries can also be useful in cases where there is a direct relationship or partnership between the software project and the library developer. Third-party libraries are often used when there is no suitable first or second-party library available, or when the functionality provided by the third-party library is particularly useful or well-known.

It's important to note that using third-party libraries can also introduce potential security or compatibility issues, so it's important to carefully evaluate and test any libraries or dependencies that are used in a software project.