.in is the country code top-level domain (ccTLD) for India. It was introduced in 1989 and is managed by the National Internet Exchange of India (NIXI). This domain is commonly used by individuals, businesses, and organizations that are based in or have a connection to India. The .in domain allows for a variety of second-level domains, such as .co.in for commercial entities and .org.in for non-profit organizations. It helps to establish a local online presence and is often preferred by those targeting an Indian audience or market.