I've done extensive research on CDN providers.
At the end of 2019, I made the decision to abandon Wordpress, and only build Static Sites.
So, I had to figure-out which CDN providers were the best investments.
It's somewhat depends on your use-case, as most companies are overpriced, or are geared toward specialty scenarios.
I was telling my buddy, Jeremy, about some of the research I was doing, at that time, and he asked me to look into this stuff for South Africa. (his target market)
That's a special use-case, because actually a lot of the CDNs don't even have a presence, there, so I made this detailed spreadsheet for him, which includes an SA column that notates POPs specifically for South Africa, in addition to a lot of other generic information:
Ivan's List of SA CDNs for Jeremy
(it might have mistakes or gaps, but still lots of good insights, here, at-a-glance)
Ultimately, I think it comes down to POPs (points of presence), and price.
Here's my personal top favorites list:
- Cloudflare (fastest dns, free bandwidth, and my ultimate pick) - 150'ish POPs
This is my best static site method, which I use for sites:
- BunnyCDN (requires external DNS, like Cloudflare, but has the most flexible edge controls on the market, and a very pleasant UI) - 40'ish POPS
This is my static site method for this service:
- Azure (their pricing page doesn't accurately show the prices... you gotta look in the backend)
You can also get access to "Akamai", or whatever it's called, through Azure or IBM CDN, and it's got much bigger POPs than all the other CDN combined, but more expensive, I guess.
- Runkod (not sure if this does deployment, now, but it's worth mentioning. It's decentralized, and might be the future for static sites.)
- Netlify (technically they combine some major cloud CDN providers)
There's probably even more out-there, now, but the major players will probably continue to be who they are for many years to come.
Like I said, earlier, my favorite combination is Azure Buckets with Cloudflare as my DNS and CDN provider.
Not sure your use-case, but mine is static sites, and I'm sure you'll find something viable from all this information, anyways.

Best to you!