Is uphold a cryptocurrency exchange?

Could you please clarify if Uphold is indeed a cryptocurrency exchange? I've heard about various platforms in the crypto space, but I'm not entirely sure about Uphold's specific role. Does it facilitate the buying, selling, and trading of digital currencies? Are there any specific features or services that Uphold offers that set it apart from other exchanges? Additionally, is Uphold a trusted and secure platform for cryptocurrency transactions? I'd appreciate any insights you could provide on this matter.