IANA Corporation Sdn Bhd, established in 2009, is known for producing Sarawak Layer Cake (Kek Lapis) under the brand Siti Payung. The company is involved in the food and beverage sector, operating restaurants, cafes, and bakery confectioneries. They have a strong presence in Malaysia with multiple branches and sales representatives, and they are actively participating in international exhibitions to expand their market reach.