Wat is meant by product development in software industry and wat is meant by IT services?

Product developement would be the programmers and designers of software and/or hardware. IT (Information Technology) services are usually people who will provide support for a LAN or business network.

Product developement develop software products, e.g - designing, building, and releasing world-class, robust and scalable software products, which helps to reduce time-to-market, cut costs, reduce business risk and improve overall business results for customers.

IT Services provides the infrastructure and the support for all technology initiatives of the University, placing priority on integrity, availability, reliabilty and security of these campus resources.
e.g. of IT services :

Application development and systems integration: assist clients with the design, build and management aspects of their transformation to on demand e-businesses.
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Application management services
services help to manage application portfolio to achieve maximum business value.
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Business Resilience & Continuity Services
Keep your business running - whatever the conditions.
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Customised training solutions
offers a comprehensive portfolio of technical training and education services to acquire and optimise IT skills.
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Infrastructure and systems management
Plan, deploy, optimise and manage your complex, multi-vendor IT infrastructure.
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IT performance
offesr a variety of services designed to test and improve the performance of business infrastructure.
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Maintenance
Keep systems running at peak performance with services designed for environment.

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Networking
Our services can help you plan, deploy, optimise, manage and run your network infrastructure.
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Outsourcing / Hosting
Strategically to manage and operate applications and information technology systems.
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Packaged application implementation
can manage and support packaged applications from independent software vendors.
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Security and privacy
can design and deliver the security architecture and infrastructure needed for trusted electronic relationships.
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Storage
Support for data and storage planning, installation, optimisation, migration and testing.
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Technical support
Keeping systems up and running is a necessity,
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Wireless
services focus on horizontal infrastructure, workforce mobility solutions and industry vertical solutions.