PSK Technologies Pvt. Ltd. is an IT company located in Nagpur, specializing in digital marketing, which utilizes the internet and digital technologies to reach potential customers. A career in digital marketing is highlighted as lucrative and in demand, with steps outlined for starting a successful career, including SEO expertise and certification in Google Ads. The document also covers various types of digital marketing, such as affiliate marketing, content marketing, and search engine marketing, along with the importance of using tools like Google Analytics.