You need to consider the TCO Total Cost of Ownership
You must take into account these costs when using JBoss:
- Annual support subscriptions
- Higher on-going management and administration costs
- Impact of outages on cost
- Impact of product’s performance on cost
- Higher cost for interoperability testing and integration of the disparate OSS projects
- Complexity and cost of supporting an integrated OSS solution
- Insurance policy for indemnity protection
- Cost to support and maintain modified code
- Extra time and effort to deal with a myriad of open source licenses
