1) Securing your back-end APIs - If you have a legacy back-end web service that has a basic authentication scheme, you can add some additional security by placing APIM in front, and requiring subscription keys. Leverage your existing firewall to ensure only your APIM instance can communicate with your back-end API, and you've basically added a layer of protection.
2) Lift and shift - there are always going to be clients that don't want to update their clients to use a newer API; in some cases you can make a newer API look like an older one by implementing some complex policies in APIM. You can also do the opposite, making older APIs look new, such as making an XML back-end accept both JSON and XML.
3) Centralizing your APIs - if you've acquired another company and want to make their API set look as if it's a part of the larger whole, APIM is an easy way to provide a consistent front-end interface for developers.
Azure CDN has at hand an infinity of applications and tools to implement in your system and have better control of your data in a clean and secure platform on the web, we recommend this program since the percentage of solutions provided by this program is very high and find a way to make each user's job easier.
I found the CDN very easy to setup and configure within the Azure Portal.
Being Azure, there are plenty of free tools that allow you to manage the CDN from a UI that is not the portal. This was especially handy when I trained end users how to manage content within their specific realm.
Lack of robustness is a bit of an issue. Several other providers offer more options and capabilities, but then, they are lacking in interface ease.
As with anything Azure, pricing is really hard to stay on top of. I always find that you really don’t know what you’re paying for until you get the bill. Having an excellent Azure Administrator can help resolve that.
Integrating with app services outside of Azure can be a challenge, or at least much more challenging than just using Azure App Services.
Great support from the team whenever we're stuck. Very proactive in resolving issues and also making changes as per the requirements of the organization.
Azure CDN reduced origin instance load by removing the need to constantly serve large numbers of static files, meaning applications can be deployed with smaller/fewer instances.
Azure CDN reduces apparent load times to customers by serving cached files out of POPs in the local region of those clients, instead of requiring those clients to make multiple, lengthy requests through to the origin servers.
