quote taken from http://www.sqlballs.com/2012/05/cross-database-views-and-schema-binding.html

An Indexed View is essentially a Materialized View. All of the data in the view instead of existing as a select statement is persisted to the physical disk. The way the data is read for an index view is quicker because you are performing a seek or a scan against one object that is dependent upon its base table.

Too much bad information on web. All starts with people not knowing what they are talking about.