AWS Certifications

If you are interested in getting an AWS certification, you can find a great training course at

There are 3 tracks of AWS certification to choose from:

1. Certified Cloud Practitioner
2. Certified Solutions Architect–associate and professional
3. Certified DevOps–Developer Associate, SysOps Admin Associate, and DevOps Professional

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Can DVR and NVR be used interchangeably?

I’ve noticed lately that some of my colleagues use the terms DVR and NVR interchangeably. Most of those that do have been around for a while. I’m not saying they are old, but if the shoe fits! The question remains…should these terms be used interchangeably?

It turns out that the Video Surveillance industry technically defines a DVR as a video recording device that has analog inputs for connecting analog cameras and which contains codecs to convert the analog video from the cameras into a digital format for saving on some type of storage media. As a result, DVRs were introduced many years ago as an upgrade to CCTV systems that used VCRs to store analog video from camera feeds.

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