Secure links are not used by the Internet. That is the main reason that the information may be vulnerable in transit to the interception. This is a major issue, while the data is to be transmitted via an unsecured link. One way we can use steganography as a solution. Steganography is a traditional technique and popular, which is anonymity in nature. This technique is the art of science used to hide the data between receiver and sender. Steganography is a popular technique to hide data from different files, they include images, video, and audio files. The requirements may vary from application to application. For Image steganography, there is a huge diversity of Stegano techniques. Some techniques are complex and some techniques are simple, and all techniques have weak and strong points. One of the techniques most popularly used is the Least Significant Bit (LSB) method. By randomly dispersing the message bits inside the image, this improved LSB technique makes it more difficult for unauthorised individuals to extract the original data from the stegano-image. This chapter is an outline of image steganography and its techniques. This chapter tells the importance of good steganography algorithms suitable for various applications.