Every software company is an IT company but every IT company may not be a software company. For example, a hardware company is an IT company but not a software company.
IT Company is the general term. It may be an IT service company or software product company. IT Services include Technical Support, Linux/Windows Server Management, Infrastructure, IT Training, Hardware and Networking, Computer and accessories Sales, etc…
IT (Information Technology) is a catch-all for the industry at present, any job that is primarily to do with the operation of computers or developing for them is within the "IT industry/sector".
The software product includes developing specific software that will benefit humankind. Such companies develop a lot of software and they call products. They sell such software products all over the globe. But each software company will adhere to a specific technology, domain, and platform.
Integrated Business Solutions India, Coimbatore, India is one of the leading service and product-based companies.
Software companies offer a wide range of development services before, during, and after an application’s life cycle. As a result, they behave more like a technological partner.
Outsourcing companies only provide resources. Their relationships with a client often end when the last line of code has been written, and interest in your application’s potential success is not high.
It may seem more attractive to hire an outsourcing company and benefit from dedicated teams. DDT relieves you from all project-management responsibilities.
You also choose to partner with a software development company. In addition to detailed, well-thought-out planning of new functionality and testing process, they support previous versions of the product. The company's products are more actively attracting young talent pool that is willing to invest its resources.