| 
 Microsoft engineers have toiled for years to make the company's software industrial strength and worthy of large corporations' dollars. 
Now the software giant faces a different challenge: fending off open-source alternatives that are good enough for most jobs. 
At Microsoft's TechEd customer conference last week, executives spelled out the company's lineup to combat these cut-rate incursions onto its turf. 
In particular, the company is focused on improving its alternatives to the so-called LAMP stack, the combination of the Linux operating system, Apache Web server, MySQL database, and scripting languages PHP, Perl or Python 
         |