Is buying a tax deed and tax lien property via auction the same? And does anyone know the states with online auctioning ?

They are not the same.

tax deed states, you are buying the property at the auction and these tend to go for for of a retail price.

tax lien state, you are only buying a lien against the property and the owner has the redemption period (varies by state) to redeem the property. If redeemed you get your investment back plus interest. (With some limitations on the interest) the interest rate and max you can earn varies by state also.

@Zachary Wright Grant Street Group is one of the companies that does online auctions for various counties around the country. There used to be a site Bid4Assests that did them but I don't know if they exists any more. Many counties do online but run their own auctions.

Google is your friend.

@Zachary Wright  As stated above they are different. A great book on the topic is the  16% solution. Below is information to a practice site and upcoming  Tax Liens in New Jersey. I would definitely suggest thoroughly researching this investment strategy. Good Luck.

https://demo.newjerseytaxsale.com/

Realauction.com