>Site to Site work without MPLS good, but what improvements give for us MPLS ?
As @cmr says, this is really dependent on your country. In my country, no one uses MPLS for new networks anymore. SD-WAN has killed it.
Depending on the service providers in your country, MPLS may offer:
- Different SLAs
- Different guarantees of performance
- Different types of access technology may vary at an address depending on the product being selected