Virtual WAN enables customers to connect branch offices with each other and with Azure and centralize their network and security requirements with virtual appliances such as firewalls and azure network and security services. We do not offer SLAs for the BizTalk Services developer level. For each of its services – cloud services, virtual machines, virtual networks, and Microsoft SQL Azure – Microsoft has released a single SLA. The Windows Azure Service Level Agreement ensures that Microsoft ensures at least 99.95% availability when two or more role instances are made available in different error and upgrade domains. This means that your Dynamics ERP must be installed twice (in two separate Azure nodes or containers) for the availability guarantee to apply. This requirement is largely unknown to partners and customers and could double your monthly Azure costs for the most part. .