Difference between MS SQL Server Reporting Services 2005 and 2008

SSRS 2005	SSRS 2008
Multiple service architecture (IIS Service & Windows Service)	Single service architecture (Windows Service)
Depends on IIS	Comes with Built-In Web Server and hence does not depend on IIS
Complex deployment due to the need for separate configuration for IIS	Deployment is simple due to inbuilt web server and Reporting Services Configuration Manager
Charts, Dials etc. had to be separately installed and integrated	Comes packaged with Charts, Dials, Indicators, Sparklines etc.
Limited exporting options	More exporting options including Microsoft Word etc
You can only format entire text in a textbox with one single formatting style (bold,italicize,colors,etc.)	Allows you to format pieces of text or words or letters within a single textbox with different formatting styles like bold,italicize,colors,etc. Example: a Disclaimer Textbox, Header Textbox etc.
Don't Support html data fields	It has HTML capability (can read data from html data fields)
It has less visualization components	It has a very rich set of visualization components like Dials, Gauges, Sparklines etc.