1. Leveraging Microsoft Exchange Server 2013 Unified Messaging for Microsoft Lync Server 2013 voicemail
2. Enabling the use of high-resolution photos in Microsoft Lync Server 2013
3. Configuring Microsoft Lync Server 2013 to use the unified contact store
4. Enabling Lync client features in Microsoft Outlook Web App 2013
Following the guidelines in TechNet are definitely useful but some essential steps are missing and since the information scattered around in different locations, this article provides 3 easy steps to get the pre-requisites configured correctly to prepare for configuring better-together features.