SharePoint Solution Packages

Solutions are the container packages for Features. Solution basically, is a cabinet (.cab) file with extension .wsp
Which contains various components needed to be deployed (features, web parts, custom forms etc.) along with files that describe some important metadata about those Components.

Example

Open Visual studio and create solution. Then Right click on solution click on Deploy

 

Here we can check the deployement process of sharepoint .

 

Now We can find the solution package(WSP) path Here.