Custom Sharepoint development is the process of developing for the Microsoft SharePoint platform. In simple words, we can say that a Sharepoint developer is someone who creates applications for the Microsoft SharePoint platform. They have deep knowledge of the Microsoft SharePoint platform, including its user interface, business intelligence, collaboration, and content management capabilities. It is a versatile development platform for building client-side components, add-ins, and solutions with varying scopes that address a wide range of needs. When you use SharePoint as a development platform, you need to create an environment to develop, test, build, and deploy your content.