TL;DR What is DevOps? A software development approach that merges development and IT operations to deliver software faster and more reliably, with automation across the whole delivery lifecycle. How does it work? As a continuous loop (plan, create, test, deploy, observe, feedback) where each stage is automated and instrumented rather than handed off between siloed teams. What do teams use it for? The two most common uses are deployment and release automation (25% of reviews) and CI/CD build-and-test automation (the most cross-product use in the category). Version control, artifact management, and requirements generation also feature heavily, though each is concentrated in a single leading product. Who uses it? Reviews split roughly evenly across small business (35%), mid-market (32%), and enterprise (25%), and come mostly from IT services and software companies. Enterprises lean hardest on deployment automation. What does it require? A cultural shift toward shared ownership, an automation-first mindset, and a consolidated toolchain rather than stitched-together point tools. Ask five engineers what DevOps means and you'll get five different answers: a culture, a job title, a specific CI/CD tool, a mindset, a checklist someone made you fill out before a release. All five are partly right, which is exactly why the term is so hard to pin down from a dictionary definition alone. Instead of arguing for one of those five, I went through 700+ recent reviews of DevOps platforms on G2 and looked at something more concrete: what teams use this software for, and who's buying it.

Most enterprise leaders don’t evaluate a large language model (LLM) solely on its cost-per-token pricing. Instead, they consider its potential savings. G2 interviewed 102 US enterprise leaders for its AI Custom Research, and the results back this up. Of the 98 who described how they compare models on cost, 60% look at ROI and labor savings rather than price per million tokens. Yet when asked about cost per outcome, which is a formal way to measure the price of one finished piece of work, 53% of the 96 who answered said they have no formal metric for it.

TL;DR What does VoIP stand for? Voice over Internet Protocol. Your voice travels as data across a broadband connection instead of down a telephone wire. How does a VoIP call actually work? Your voice is digitized, split into packets, routed across an IP network, and reassembled at the other end, usually in well under a fifth of a second. What is a VoIP number? A phone number that belongs to a software account rather than to a physical line at a physical address. That is why it follows you between devices, and why some services refuse it for SMS verification. Should I answer a call labeled "VoIP Caller"? The label identifies the carrier type, not the caller's intent. A legitimate small business and a spam operation can produce the same one, so on its own it tells you very little. What types of VoIP are there? The distinction that carries legal weight is interconnected versus non-interconnected VoIP, not the "fixed versus non-fixed" framing sold by number marketplaces. What do businesses actually use VoIP for? Consolidation, above all. Among 5,700+ G2 reviewers who described the problem they were solving, 28.4% mention putting calls, texts, and video in one place, the most common theme by a wide margin. Who buys VoIP? Mostly small businesses. 63% of reviewers on G2's Fall 2026 Grid Report come from companies of 50 employees or fewer, and top executives write a notably higher share of VoIP reviews than they do across G2 as a whole. How quickly does it pay off? Typical deployments go live in about 1.2 months and pay back in about 12.6 months, down from 14.8 months three years ago. You almost certainly used VoIP today. If you took a WhatsApp call, answered on FaceTime Audio, dialed into a Teams meeting, or called a company whose phone system rang someone's laptop, that call traveled over the internet rather than a telephone line. In this guide, I'll cover what VoIP is, how a call actually gets from your mouth to someone's ear, what a VoIP number is and why some websites reject it, and what more than six thousand businesses on G2 told me they use it for.