"extensively customized" is correct and can be used in written English.
You can use it in a sentence to emphasize that something has been made to meet a specific requirement or purpose. For example, "This software has been extensively customized to meet the specific needs of the client."
RoboForm can be extensively customized and can be used in any of 20 languages including Finnish, Chinese, Korean and Hungarian.
However, the version of Android it runs has been extensively customized.
The vehicle was "extensively customized with an added seat and safety cage," officials said.
User-defined features or analysis results can be included on maps, and maps can be extensively customized.
We used software designed for CCTV surveillance, which has been extensively customized by the developer to facilitate its use in biological research (iCatcher ver. 5.2, www.icode.co.uk/icatcher).
On the show and in real life, he and various companions pursue genuinely frightening weather formations back and forth across the most storm-prone parts of the United States, in an extensively customized and fortified Chevrolet Tahoe, which they call the Dominator.
The service is focused mostly on attracting agencies that build websites for clients and emphasizes the ability to extensively customize the appearance and structure of a site.
"They never knitted these systems together". He added that many entities, particularly doctors, aren't helping to keep costs down by insisting on extensively customizing their patient records.
Others use calculators from private companies, customized extensively to each college's needs.
The players can be customized extensively – a plain version appears at right.
The look and feel of Lefora forums can be customized extensively with CSS modifications, pre-made themes, and color adjustments.
