Welcome!

Symbian Authors: Jack Newton, Kevin Benedict, Matthew Lobas, Shelly Palmer, RealWire News Distribution

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

Agile Computing: 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
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
Web Real-Time Communication APIs have quickly revolutionized what browsers are capable of. In addition to video and audio streams, we can now bi-directionally send arbitrary data over WebRTC's PeerConnection Data Channels. With the advent of Progressive Web Apps and new hardware APIs such as WebBluetooh and WebUSB, we can finally enable users to stitch together the Internet of Things directly from their browsers while communicating privately and securely in a decentralized way.
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor - all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organization...
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm.
What sort of WebRTC based applications can we expect to see over the next year and beyond? One way to predict development trends is to see what sorts of applications startups are building. In his session at @ThingsExpo, Arin Sime, founder of WebRTC.ventures, will discuss the current and likely future trends in WebRTC application development based on real requests for custom applications from real customers, as well as other public sources of information,
SYS-CON Events announced today that Interoute, owner-operator of one of Europe's largest networks and a global cloud services platform, has been named “Bronze Sponsor” of SYS-CON's 20th Cloud Expo, which will take place on June 6-8, 2017 at the Javits Center in New York, New York. Interoute is the owner-operator of one of Europe's largest networks and a global cloud services platform which encompasses 12 data centers, 14 virtual data centers and 31 colocation centers, with connections to 195 add...
TechTarget storage websites are the best online information resource for news, tips and expert advice for the storage, backup and disaster recovery markets. By creating abundant, high-quality editorial content across more than 140 highly targeted technology-specific websites, TechTarget attracts and nurtures communities of technology buyers researching their companies' information technology needs. By understanding these buyers' content consumption behaviors, TechTarget creates the purchase inte...
With the introduction of IoT and Smart Living in every aspect of our lives, one question has become relevant: What are the security implications? To answer this, first we have to look and explore the security models of the technologies that IoT is founded upon. In his session at @ThingsExpo, Nevi Kaja, a Research Engineer at Ford Motor Company, will discuss some of the security challenges of the IoT infrastructure and relate how these aspects impact Smart Living. The material will be delivered i...
In his session at @ThingsExpo, Eric Lachapelle, CEO of the Professional Evaluation and Certification Board (PECB), will provide an overview of various initiatives to certifiy the security of connected devices and future trends in ensuring public trust of IoT. Eric Lachapelle is the Chief Executive Officer of the Professional Evaluation and Certification Board (PECB), an international certification body. His role is to help companies and individuals to achieve professional, accredited and worldw...
Your homes and cars can be automated and self-serviced. Why can't your storage? From simply asking questions to analyze and troubleshoot your infrastructure, to provisioning storage with snapshots, recovery and replication, your wildest sci-fi dream has come true. In his session at @DevOpsSummit at 20th Cloud Expo, Dan Florea, Director of Product Management at Tintri, will provide a ChatOps demo where you can talk to your storage and manage it from anywhere, through Slack and similar services ...
My team embarked on building a data lake for our sales and marketing data to better understand customer journeys. This required building a hybrid data pipeline to connect our cloud CRM with the new Hadoop Data Lake. One challenge is that IT was not in a position to provide support until we proved value and marketing did not have the experience, so we embarked on the journey ourselves within the product marketing team for our line of business within Progress. In his session at @BigDataExpo, Sum...
SYS-CON Events announced today that Ocean9will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Ocean9 provides cloud services for Backup, Disaster Recovery (DRaaS) and instant Innovation, and redefines enterprise infrastructure with its cloud native subscription offerings for mission critical SAP workloads.
SYS-CON Events announced today that Linux Academy, the foremost online Linux and cloud training platform and community, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Linux Academy was founded on the belief that providing high-quality, in-depth training should be available at an affordable price. Industry leaders in quality training, provided services, and student certification passes, its goal is to c...
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 20th International Cloud Expo, which will take place on June 6–8, 2017, at the Javits Center in New York City, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
SYS-CON Events announced today that Loom Systems will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Founded in 2015, Loom Systems delivers an advanced AI solution to predict and prevent problems in the digital business. Loom stands alone in the industry as an AI analysis platform requiring no prior math knowledge from operators, leveraging the existing staff to succeed in the digital era. With offices in S...
SYS-CON Events announced today that T-Mobile will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. As America's Un-carrier, T-Mobile US, Inc., is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The Company's advanced nationwide 4G LTE network delivers outstanding wireless experiences to 67.4 million customers who are unwilling to compromise on ...
SYS-CON Events announced today that Cloudistics, an on-premises cloud computing company, has been named “Bronze Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Cloudistics delivers a complete public cloud experience with composable on-premises infrastructures to medium and large enterprises. Its software-defined technology natively converges network, storage, compute, virtualization, and management into a ...
SYS-CON Events announced today that CA Technologies has been named “Platinum Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business – from apparel to energy – is being rewritten by software. From ...
SYS-CON Events announced today that Infranics will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Since 2000, Infranics has developed SysMaster Suite, which is required for the stable and efficient management of ICT infrastructure. The ICT management solution developed and provided by Infranics continues to add intelligence to the ICT infrastructure through the IMC (Infra Management Cycle) based on mathemat...
Now that the world has connected “things,” we need to build these devices as truly intelligent in order to create instantaneous and precise results. This means you have to do as much of the processing at the point of entry as you can: at the edge. The killer use cases for IoT are becoming manifest through AI engines on edge devices. An autonomous car has this dual edge/cloud analytics model, producing precise, real-time results. In his session at @ThingsExpo, John Crupi, Vice President and Eng...