Indeed is an adverb used to emphasize a statement or response confirming something already suggested.
Common usages of indeed include:
1. "It is indeed a beautiful day" - emphasizing agreement
2. "Did you enjoy the trip?" "Indeed I did!" - confirming something
3. "Indeed, the situation is serious" - introducing a stronger statement
4. "Very nice indeed" - intensifying an adjective
5. As a job search website name - Indeed.com