Prepare a Word Document named which provides an introduction how Microsoft Azure can provide for VM availability and scalability of virtual machines (VMs). Organize your memo as follows:

A first paragraph should introduce availability and scalability for IT resources, especially access to virtual machines and services. It should also contrast planned maintenance, unplanned maintenance, and disaster recovery for VMs.

Second through fourth paragraphs should describe Azure availability sets, Azure scale sets, and Azure load balancers seperately. Be sure to define and describe each concept in a few sentences and identify how they can contribute to availability and / or scalability of VMs and services.

Conclude with a wrapup paragraph mentioning the three tools reviewed to help with VM availability and scalability. Also briefly describe how Azure platform as a service (PAAS) options which can help with managing services which may depend on VMs in a current architecture.