Skype for Business, formerly known as Microsoft Lync Server, is a unified communications (UC) platform that integrates common channels of business communication including instant messaging (IM), VoIP (voice over IP), file transfer, Web conferencing, voice mail and email. Microsoft acquired Skype in 2011 and changed Lync's name to Skype for Business in 2015. Changes include a new client interface, a new server release and updates to the UC service in Office 365. Skype for Business can be used for communications within an organization, between multiple organizations and with external individuals.
CRM stands for Customer Relationship Management. It's a category of integrated, data-driven solutions that improve how you interact and do business with your customers. CRM systems and applications are designed to manage and maintain customer relationships, track engagement and sales, and deliver actionable data - all in one place.
Email hosting is a service that runs email servers. Put simply, if you own a domain name and want email service on that domain name, you would need to sign up for an email hosting service. Using a professional email hosting service should give you peace of mind. You should be able to focus on your business while the email hosting provider manages your email service.
Exchange is a popular Microsoft messaging system that includes a mail server, an e-mail program (e-mail client), and groupware applications. Designed for use in a business setting, the Exchange server is often used in conjunction with Microsoft Outlook to take advantage of Outlook's collaborative features, such as the ability to share calendars and contact lists.
Mobile application development process by which application software is developed for mobile devices, such as personal digital assistants, enterprise digital assistants or mobile phones.
Web hosting is a service that allows organizations and individuals to post a website or web page on to the Internet