Process of designing, coding, testing, and maintaining softwares. It involves a range of activities including requirements gathering, system design, implementation, and deployment.
ITSM is managing IT services to meet an organization's needs. It involves creating strategies, designs, operations, and continuous improvements for delivering and managing services.
Providing assistance and support to customers before, during, and after a purchase. It involves addressing customer needs, resolving complaints, and building relationships to promote customer satisfaction and loyalty.