Back in 2009, I wrote an article about how to create a simple Quote of the Day web part by leveraging SharePoint’s 2007 customization capabilities (see Figure 6-1).
Although the code behind the web part was very simple, the web part itself had a few limitations such as dependency on the jQuery library or use only in the same site as the location of the Quotes list.
Whenever you want to redistribute your SharePoint solution, you should create a SharePoint Solution Package (WSP). Unfortunately, in many environments, deploying WSPs is restricted and allowed only after passing reviews. This process might be very expensive for a simple solution such as the Quote of the Day web part. The concept of the Sandbox has been introduced in SharePoint 2010 specifically for such scenarios. Sandbox allows you to deploy SharePoint Packages in an isolated process without the involvement of IT and can be done by the site collection administrator.