In Go, modules are a way to manage the dependencies of your Go projects. They allow you to define, version, and manage collections of Go packages, making it easier to build, share, and maintain code.

• Initialise a golang project

go mod init github.com/hkirat/go-http-server

• Fetch an external package

go get github.com/gin-gonic/gin 

• Use the external package

import "github.com/gin-gonic/gin"