VPN vs MPLS

chmod

Im working on a project for a company that have 15 MPLS links, they dont have an IT department.
Im new on MPLS, in my opinion it's the like a frame relay link(somehow).
What advantages and disadvantages have MPLS vs traditional VPN ip sec(GRE) links.
Cost saving?, Faster?, more reliable?.

chmod

I found the follwing:

Here are a few quick thoughts.

Use MPLS when:
* You control (policy and device) on both ends of the connection
* Geographic coverage and logistics allow for single service provider
* QoS is particularly important to the application(s)
* No remote access requirements anticipated
* Strict security is not required (you trust the service provider enough to
be able to see the data, and can withstand the risk of the service provider
making a configuration mistake that exposes your data to a third party)
* Configuration changes only as quick as the responsiveness of the service
provider is acceptable
* Performance is more important than price

And so the antithesis, use IPsec-based VPNs when:
* You may need to include "extranet" sites or users (of which you don't have
the control to select the policy or device)
* Geographic coverage required exceeds that of your preferred provider
* QoS is not particularly important
* Remote access is a likely requirement
* Security is critical
* Configuration changes must happen quickly, and need to be within your
control
* Price is more important than performance