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Understanding LDAP - Design and Implementation

Central user administration has been a long desired feature by me for our data center. MS AD does it all for Windows, but Linux has been all stand-alone so far. I tried to do something quick with NIS in the past, but it never quite took off. So it's just me own (mngt and monitoring servers).

For this year, Identity Management was made an issue. However, which one is still up in the air. AD, Oracle's OID, Centrify or just plain an simple standard openLDAP? From my own experiences, openLDAP is great but distributions are behind on the latest official releases and this can wreak havoc in some obscure but critical situations.

So time to read up on the subject. Someone recommended the IBM Redbook Understanding LDAP - Design and Implementation to me... Interesting!
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