I am new to SharePoint 2010. What is the main difference between sandbox and farm solution. Can you give me 5 differences to remember. I googled, but there is lot of matter to understand. As a start up guy, i want to know the basic difference. Thanks for your help.
Farm Solution: Farm solutions, which are hosted in the IIS worker process (W3WP.exe), run code that can affect the whole farm. When you debug a SharePoint project whose Sandboxed Solution property is set.
Sandbox solution: Sandboxed solutions, which are hosted in the SharePoint user code solution worker process (SPUCWorkerProcess.exe), run code that can only affect the site collection of the solution. Because sandboxed solutions do not run in the IIS worker process, neither the IIS application pool nor the IIS server must restart. Visual Studio attaches the debugger to the SPUCWorkerProcess process that the SPUserCodeV4 service in SharePoint automatically triggers and controls. It is not necessary for the SPUCWorkerProcess process to recycle to load the latest version of the solution.
For more please refere this link
You can also refere this to know sandbox solutions goodlink