In a digital world we need a digital solution to storing our work, our explorations and our memories. Just as film used to be the preservance of images taken on our cameras, digital memory cards are the present and future. The range of shapes, sizes, speeds and formats is vast and it's not a case of one type suits all. From the smallest MicroSD cards through to the latest CFExpress Cards, different types of cameras require different types of memory card.
Whether you're soley into photography or dip your toe in the videography world, you may want to invest in larger and faster writing speeds capable of working with large RAW files and 4K video. That said, if you're sticking with smaller compact cameras then you may want to use a lower cost and smaller memory card as you want be so dependant on the speedy file transfer speeds.