Mapbox's mapping tools are Best in Class at the moment, if you are serious about making powerful, beautiful, configurable maps that load quickly and look great. They have more options than anyone else out there, and actually seem to care about innovating in the mapping space (unlike Google Maps, which has been practically dormant for a long time now). Their Mapbox Studio tool makes it effortless to change the appearance of map features, and their satellite tiles are beautiful and in high definition. Mapbox has been on the cutting edge of vector-based mapping technology, which is rapidly becoming the standard for good reason. Beyond this, their Community & Social outreach has been execllent. I have been a heavy user of Mapbox maps since 2018. I run a popular website (NUKEMAP, a nuclear weapons effects simulator) that can have extremely variable traffic spikes depending on world events and media coverage, and is also entirely not-for-profit (with no advertising, etc.) and run on a shoestring budget. I switched to Mapbox from Google Maps because it became clear that Google was too interested in monetizing their interactions with people like me to be usable, and their prices were killing any ability to have a widely-used website that was not focused around generating profit. Mapbox has been willing to work with me, and has worked to find plans that would fit my budget, given the nature of the work, and has given me huge amounts of assistance and patience when I have been in between sponsors.

Free mapping service up to at least 200,000 requests per API. I have been using it for years and find it to be an excellent service. Simple to use, I never had to contact support, I always used the documentation and it always worked.

Ease of implementation and integration with our mobile app showing locations and visit detail for 600 birding/wildlife sites across Scotland. The maps on our app have about 0.25m views per year and performance has been impressively reliable.