There are 2 types of review:
Informal Review:technical lead reviewing.
Peer Review: by a peer at the same organization (walkthrough ? technical - inspection).

reviews:
1. Management Review
2. Technical Review
3. code Review
4. Formal Review(Inspections and Audits)
5. Informal Review(Peer Review and Code Review)
and coming to walk throughs....
objectives of Reviews:
1. to find defects in requirements.
2. To find defects in Design.
3. To identify deviations in any process and also provide valued suggestions to improve the process.

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