What is itBit?

Could you please explain to me what exactly is itBit? I've heard it mentioned in the context of cryptocurrency trading, but I'm not entirely sure what its purpose or functionality is. Is it a platform for buying and selling digital assets? Does it offer any unique features or services that set it apart from other exchanges? I'm particularly interested in learning about its security measures and whether it's a trustworthy platform for investors. Thank you in advance for shedding some light on this topic.