Mainly I am curious about what products will be shelved. It will be interesting to see how Yahoo's open source BSD will be integrated into Microsoft Windows infrastructure.
Yahoo's platform mainly comprises of :
- OS (FreeBSD, migrating to Red Hat Enterprise Linux)
- Databases (MySQL, Oracle)
- Mail Servers (qmail)
- Yapache (Yahoo modified Apache)
- C/C++ (infrastructural pieces)
- Java (Spring, Hibernate, ehcache, c3po, log4j, etc.)
- yinst for distributed deployment
- ymon other tools for monitoring
And MSN infrastructure has of course MS written all over it - Windows 2k/2k3 servers, IIS Web Servers, ASP.NET, MS SQL Servers, ADS for deployment, WMI for monitoring.
Prior to Microsoft acquisition, Hotmail used Sun Solaris servers and it took several years to fully migrate to Windows platforms. Google might have an edge here while MS and Yahoo are spending most of their energies in integration work resulting in a much smaller yahoo. Shall we MiniYahoo or MicroYahoo;)?