Alignment, staffing and culture are often more critical than software and apps
Some IT departments only try to make more complex the IT environment and try to get the attention of CEO, to get more budget and look important, but they are not really trying to solve the problems of business units and give them the tools to make more money and improve.
IT departments has to be more efficient and intelligent ti give value to the company.
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This is an interesting comment. The problem as someone rightly pointed out, is the difficulty in estimating the return on investment. A lot of organisations would therefore be reluctant to adopt Web 2.0.
I have mentioned this on my blog on siliconindia about the oppurtunity for organisations to use web 2.0 as a tool for co-creation. This would enable the customer to be more directly involved with the process of creationfo a product or service. For referrence
It may be easier to look at particular examples from differing industries. Banks have moved from "The Branch of the Future" to more predictive communications with customers and prospects. In this way the Web 2.0 applications in use can actually be shown to drive customer loyalty (easier to communicate, proactive service) and increased customer transactions. Do this analysis by industry type (it will vary) to determine the business case.
Topic: Web Applications
Browser-based apps offer scalability, ease of deployment and sophisticated features
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I have found that it is really hard for IT or a line of business to quantify the return on a Web 2.0 investment like blogs or wiki's. However, if you look at Web 2.0 as a set of principles and concepts (as was originally intended) then you'll find there are other ways to drive business value. Ways that allow IT to maintain control, keep things secure and demonstrate a measurable ROI. For example, Unified Communications shares a number of core principles and concepts with Web 2.0. By turning business leaders on to this it becomes a great opportunity for adoption and a great way to kick off a sustainable Web 2.0 strategy.