What is the difference between ADO and ADO.NET?

1. ADO objects are COM objects. ADO.Net objects are represented using XML
2. ADO objects have difficulty travelling through firewalls. ADO.Net objects represented as text (XML) travel easily through all kinds of network restrictions.
3. ADO recordsets are heavier than the ADO.Net counterparts datasets.
4. ADO recordsets can hold data from one data source at a time. ADO.Net datasets can hold data from various sources and integrate the data and write it back to one / several data sources.
5. ADO.Net dataset represents in memory representation of a database. ADO recordsets is merely a set of rows retrieved from a data source.