KKR is a private equity and real estate investment firm that invests in various industries such as software, security, healthcare, and renewable energy globally. They specialize in direct and fund of fund investments, including acquisitions, leveraged buyouts, and credit special situations, with a focus on mid to large-sized companies. KKR seeks to acquire majority and minority equity interests and hold their investments for five to seven years, exiting through initial public offerings, secondary offerings, and sales to strategic buyers.