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I highly recommend configuring an OSX Caching server in your Mac environment, for the following reasons:<br />

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With 70 clients, that's a lot of bandwidth being used by clients going out individually to retrieve updates to App-store apps. The caching server will serve updates from within your local network.
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The Caching server will include iOS updates, App-store updates, etc.
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It's built-in. No extra cost, just a bit of configuration required.
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I suggest looking into it. <br />
<a href="https://support.apple.com/en-ca/HT204675" rel="ugc">https://support.apple.com/en-ca/HT204675</a>
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Ok, that seems to make sense. How do admins push out the updates to the clients with no user interaction? Can the admins choose which updates to enable for install?<br />
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We are a school. Thanks
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OK thanks, the Q really is:<br />
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&quot;as more software is now being deployed from Apple as 'Apps' from the Mac App Store (deployed initially using profile manager on the server) how are we supposed to now deploy <u><b>updates </b></u>to those Apps?&quot;
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I'm aware of the original question and I'm not sure what you mean here??<br />
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The software update service would allow you to have control over which software updates get made available to the clients. Essentially it removes individual ability to download updates as the clients are now looking only at the software update server for what it is allowed to update.
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I have a Mac server and 70 mac clients running Yosemite. &nbsp;In the past software like iMovie could have its updates pushed out using 'software update' in profile manager, but as more software is now being deployed from Apple as 'Apps' from the Mac App Store (deployed initially using profile manager on the server) how are we supposed to now deploy updates to those Apps?
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I have a Mac server and 70 mac clients running Yosemite.  In the past software like iMovie could have its updates pushed out using 'software update' in profile manager, but as more software is now being deployed from Apple as 'Apps' from the Mac App Store (deployed initially using profile manager on the server) how are we supposed to now deploy updates to those Apps?

Mac - App Updates Deployment

Apple devices including Macs, iPhones, iPods and iPad support standard wired and wireless networking technologies, but they also utilize custom applications and some special techniques for networking with each other and with non-Apple devices. Apple manufacturers the AirPort line of wireless networking products, and has its own networking protocols, AppleTalk and AFP (Apple Filing Protocol).

Apple Networking

Programs written for the Apple operating systems are distinguished from software created for other operating systems in that it must be approved by Apple for use on its devices, whether it is from Apple (Final Cut, iWork, Keynote, Logic Pro and GarageBand are popular titles), or is a third party application from Parallels, Nuance, Microsoft and Amazon, among many others.

Apple Software

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.