Welcome!

Recurring Revenue Authors: Pat Romanski, Liz McMillan, Yeshim Deniz, Carmen Gonzalez, Elizabeth White

Related Topics: @DevOpsSummit, Containers Expo Blog, @CloudExpo

@DevOpsSummit: Article

Understanding #Serverless at @CloudExpo | #DevOps #NoCode #LowCode #AI

Understanding the pitfalls and disadvantages of serverless will make it much easier to identify use cases that are a good fit

Understanding Serverless Cloud and Clear
By Martijn van Dongen

Serverless is considered the successor to containers. And while it’s heavily promoted as the next great thing, it’s not the best fit for every use case. Understanding the pitfalls and disadvantages of serverless will make it much easier to identify use cases that are a good fit. This post offers some technology perspectives on the maturity of serverless today.

First, note how we use the word serverless here. Serverless is a combination of “Function as a Service” (FaaS) and “Platform as a Service” (PaaS). Namely, those categories of cloud services where you don’t know what the servers look like. For example, RDS or Beanstalk are “servers managed by AWS,” where you still see the context of server(s). DynamoDB and S3 are just some kind of NoSQL and storage solution with an API, where you do not see the servers. Not seeing the servers means there’s no provisioning, hardening or maintenance involved, hence they are server “less.” A serverless platform works with “events.” Examples of events are the action behind a button on a website, backend processing of a mobile app, or the moment a picture is being uploaded to the cloud and the storage service triggers the function.

Performance
All services involved in a serverless architecture can scale virtually infinitely. This means when something triggers a function, let’s say, 1000 times in one second, it is guaranteed that all executions will finish one second later. In the old container world, you have to provision and tune enough container applications to handle this amount of instant requests. Sounds like serverless is going to win in this performance challenge, right? Sometimes the serverless container with your function is not running and needs to start. This causes slight overhead in the total execution of the “cold” functions, which is undesirable if you want to ensure that your users (or “things”) get 100% fast response. To get predictable responses, you have to provision a container platform, leaving you to wonder if it’s worth the cost, not just for running the containers, but also for related investments in time, complexity and risk.

Cost Predictability
With container platforms or servers, you’re billed per running hour, or, in exceptional cases, per minute or second. If you have a very predictable and steady workload, you might utilize at around 70%, which is still a lot of waste. At the same time, you always need to over-provision because of the possibility of sudden spikes in traffic. One option would be to increase utilization, which would come with fewer costs, but also higher risk. With serverless, in contrast, you pay by code execution to the nearest 100 milliseconds, which is much more granular and close to 100% utilization. This makes serverless a great choice for traffic that is unpredictable and very spiky because you pay only for what you use.

Security
You would expect cloud services to be fully secure. Unfortunately, this isn’t the case for functions. With most cloud services, the “attack surface” is limited and therefore possible to fully protect. With serverless, however, this surface is really thin and broad and runs on shared servers with less protection than, for instance, EC2 or DynamoDB. For that reason, information such as credit card details are not permitted in functions. That does not mean it’s insecure, but it does mean that it can’t pass a strict and required audit…yet. Given the high expectations for serverless, security will likely improve, so it’s good to get some experience with it now so you’re ready for the future.

Start with backend systems with less sensitive data, like gaming progress, shopping lists, analytics, and so on. Or process orders of groceries, but outsource the payment to a provider. Like credit card numbers, these things are on their own sensible piece of data, but if data in memory is leaked to other users of the same underlying server, a credit card number exposure can be exploited, but an identifier like id: 3h7L8r bought tomatoes cannot.

Reliability
Another thing to think about with security is the availability of services. A relatively “slow” service that can’t go down is generally better than a service that is fast but unavailable. Often in a Disaster Recovery setup, all on-premise servers are replicated to the cloud, which adds a lot of complexity. In most cases, it’s better to turn off your on-premise and go all-in cloud. If you’re not ready for this step, you can also use serverless as a failover platform to keep particular functionalities highly available, not all functionalities of course, but those that are mission critical, or can facilitate temporary storage and process in a batch after recovery. It’s less costly and very reliable.

Cloud and Clear
Until recently, it was quite tricky to launch and update a live function. More and more frameworks, like Serverless.com and SAM, are solving the main issues. Combined with automated CICD, it’s easy to deploy and test your serverless platform in a secured environment. This ensures the deployment to production will succeed every time and without downtime. With cloudformation or terraform you “develop” the cloud native services and configure functions. With programming languages like nodejs, python, java or C#, you develop the functions themselves. Even logging and monitoring has become really mature over the last few months. The whole source gives you a “cloud and clear” overview of what’s under the hood of your serverless application: how it’s provisioned, built, deployed, tested and monitored and how it runs.

Conclusion
AWS started in 2014 with the launch of Lambda, and although this post is mainly about AWS, Google and Microsoft are investing highly in their functions, and in the serverless approach as well. Over the last couple of months, they’ve shown very promising offerings and demos. The world is not ready to go all-in on serverless, but we’re already seeing increasing interest from developers and startups, who are building secure, reliable, high-performing and cost-effective solutions, and easily mitigating the issues mentioned earlier. You can look forward to waking up one day and finding out that serverless is now fully secured, provides reliable performance (pre-warmed), and has been adopted by many competitors. So be prepared and start investing in this technology today.

This blog was originally published by Xebia at Understanding Serverless Cloud and Clear.

The post Understanding Serverless Cloud and Clear appeared first on XebiaLabs.

More Stories By XebiaLabs Blog

XebiaLabs is the technology leader for automation software for DevOps and Continuous Delivery. It focuses on helping companies accelerate the delivery of new software in the most efficient manner. Its products are simple to use, quick to implement, and provide robust enterprise technology.

@ThingsExpo Stories
Real IoT production deployments running at scale are collecting sensor data from hundreds / thousands / millions of devices. The goal is to take business-critical actions on the real-time data and find insights from stored datasets. In his session at @ThingsExpo, John Walicki, Watson IoT Developer Advocate at IBM Cloud, will provide a fast-paced developer journey that follows the IoT sensor data from generation, to edge gateway, to edge analytics, to encryption, to the IBM Bluemix cloud, to Wa...
SYS-CON Events announced today that Massive Networks, that helps your business operate seamlessly with fast, reliable, and secure internet and network solutions, has been named "Exhibitor" of SYS-CON's 21st International Cloud Expo ®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. As a premier telecommunications provider, Massive Networks is headquartered out of Louisville, Colorado. With years of experience under their belt, their team of...
SYS-CON Events announced today that Nihon Micron will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Nihon Micron Co., Ltd. strives for technological innovation to establish high-density, high-precision processing technology for providing printed circuit board and metal mount RFID tags used for communication devices. For more inf...
SYS-CON Events announced today that mruby Forum will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. mruby is the lightweight implementation of the Ruby language. We introduce mruby and the mruby IoT framework that enhances development productivity. For more information, visit http://forum.mruby.org/.
In his session at @ThingsExpo, Greg Gorman is the Director, IoT Developer Ecosystem, Watson IoT, will provide a short tutorial on Node-RED, a Node.js-based programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. It provides a browser-based editor that makes it easy to wire together flows using a wide range of nodes in the palette that can be deployed to its runtime in a single-click. There is a large library of contributed nodes that help so...
SYS-CON Events announced today that Ryobi Systems will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Ryobi Systems Co., Ltd., as an information service company, specialized in business support for local governments and medical industry. We are challenging to achive the precision farming with AI. For more information, visit http:...
SYS-CON Events announced today that SIGMA Corporation will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. uLaser flow inspection device from the Japanese top share to Global Standard! Then, make the best use of data to flip to next page. For more information, visit http://www.sigma-k.co.jp/en/.
SYS-CON Events announced today that Daiya Industry will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Daiya Industry specializes in orthotic support systems and assistive devices with pneumatic artificial muscles in order to contribute to an extended healthy life expectancy. For more information, please visit https://www.daiyak...
SYS-CON Events announced today that B2Cloud will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. B2Cloud specializes in IoT devices for preventive and predictive maintenance in any kind of equipment retrieving data like Energy consumption, working time, temperature, humidity, pressure, etc.
SYS-CON Events announced today that NetApp has been named “Bronze Sponsor” of SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. NetApp is the data authority for hybrid cloud. NetApp provides a full range of hybrid cloud data services that simplify management of applications and data across cloud and on-premises environments to accelerate digital transformation. Together with their partners, NetApp em...
What is the best strategy for selecting the right offshore company for your business? In his session at 21st Cloud Expo, Alan Winters, U.S. Head of Business Development at MobiDev, will discuss the things to look for - positive and negative - in evaluating your options. He will also discuss how to maximize productivity with your offshore developers. Before you start your search, clearly understand your business needs and how that impacts software choices.
SYS-CON Events announced today that Interface Corporation will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Interface Corporation is a company developing, manufacturing and marketing high quality and wide variety of industrial computers and interface modules such as PCIs and PCI express. For more information, visit http://www.i...
SYS-CON Events announced today that Keisoku Research Consultant Co. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Keisoku Research Consultant, Co. offers research and consulting in a wide range of civil engineering-related fields from information construction to preservation of cultural properties. For more information, vi...
SYS-CON Events announced today that MIRAI Inc. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MIRAI Inc. are IT consultants from the public sector whose mission is to solve social issues by technology and innovation and to create a meaningful future for people.
SYS-CON Events announced today that Fusic will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Fusic Co. provides mocks as virtual IoT devices. You can customize mocks, and get any amount of data at any time in your test. For more information, visit https://fusic.co.jp/english/.
SYS-CON Events announced today that N3N will exhibit at SYS-CON's @ThingsExpo, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. N3N’s solutions increase the effectiveness of operations and control centers, increase the value of IoT investments, and facilitate real-time operational decision making. N3N enables operations teams with a four dimensional digital “big board” that consolidates real-time live video feeds alongside IoT sensor data a...
Mobile device usage has increased exponentially during the past several years, as consumers rely on handhelds for everything from news and weather to banking and purchases. What can we expect in the next few years? The way in which we interact with our devices will fundamentally change, as businesses leverage Artificial Intelligence. We already see this taking shape as businesses leverage AI for cost savings and customer responsiveness. This trend will continue, as AI is used for more sophistica...
SYS-CON Events announced today that Enroute Lab will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Enroute Lab is an industrial design, research and development company of unmanned robotic vehicle system. For more information, please visit http://elab.co.jp/.
SYS-CON Events announced today that Mobile Create USA will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Mobile Create USA Inc. is an MVNO-based business model that uses portable communication devices and cellular-based infrastructure in the development, sales, operation and mobile communications systems incorporating GPS capabi...
There is huge complexity in implementing a successful digital business that requires efficient on-premise and cloud back-end infrastructure, IT and Internet of Things (IoT) data, analytics, Machine Learning, Artificial Intelligence (AI) and Digital Applications. In the data center alone, there are physical and virtual infrastructures, multiple operating systems, multiple applications and new and emerging business and technological paradigms such as cloud computing and XaaS. And then there are pe...