The methodologies - IT Infrastructure Library (ITIL) and CMMI, an updated version of the Capability Maturity Model for software development and project management - act as a guide for how an IT department should operate.
ITIL was created by the UK government but is now being adopted by organisations worldwide as best practice in IT service provision. CMMI measures how well the software development process is documented on a scale of one to five.
CMMI is also being adopted by IT outsourcing suppliers such as EDS and Indian company Wipro.
"CMMI measures how easy it would be to develop new systems and how effective we are," said Abbey IT director Bill Gibbons. "It is absolutely critical to us. As part of the company restructuring there is increased demand on the IT development community. For my team, ITIL has to be part of working practices."
Teresa Jones, senior research analyst at Butler Group, said the methodologies could help IT departments become more efficient and reduce the likelihood of embarking on ill-conceived projects.
"CMMI means you are more likely to develop what is needed and do it right, rather than doing things that sound like a good idea and making a complete mess of them," she said. "With ITIL, it is about making sure that IT is delivering what it needs to. It covers wider areas than simply software, such as how to handle bugs properly and how to report them."