How Cloud Serverless Technology change the model of application development and maintenance

1. Chithrai Mani Director of Architecture and Delivery - Talking About Cloud
Serverless Technology
Serverless technology is the new stride of the current technology world. It refers to the
computing of an event-driven application, its design and deployment for computing the
various associated resources in terms of scalable cloud services. The traditional applications
along with server's computing resources comprised of both fixed and dynamic costs
association, regardless of the computing work the server performed. But, a serverless
computing technology demands the customers to only pay for the service usage without
getting involved in the unnecessary costs associated with the idle or downtime. The concept
doesn't eliminate servers but emphasizes the idea of moving the computing resource
considerations to the background right at the design phase. This concept is also referred as
"function as a service (Faas)" or "runtime as a service (RaaS)."
Existing Problems
Serverless Evaluation

2. Serverless cloud computing is also considered as the next layer of abstraction. The
technology has transformed from the IAAS to PAAS and finally led to being called as
Serverless technology. Amazon's AWS Lambda, IBM's OpenWhisk, Microsoft's Azure
Function, and Google cloud Function are a few examples of the public cloud serverless
computing service providers. Here, developers can put up their codes, create the backend
applications, develop various event handling routines, and also process data without having
to worry about the servers, virtual machines (VMs), or the other foundational compute
resources that are required to sustain large chunks of a data and events. This is mainly
because the provider, itself maintains the entire actual hardware and the infrastructure
involved in such process.
Sample AWS Serverless Architecture
Advantages of Serverless Technology

3. Even though there are a limited number of service providers in the serverless world, still, its
benefits are immense. This is the reason that the technology stands well in demand by
various companies and organisations.
Let's have a look at the five significant advantages of serverless technology as mentioned
below:-
 Reduced Time to Market
Serverless approaches give way for the developers to create their new apps in just
hours or days instead of the traditional weeks and months that were involved earlier.
Example: authentication (OAuth), maps (Mapbox), social (Twitter), artificial
intelligence (IBM's Watson), etc.
 Superior Scalability
Serverless architecture gives enough scalability offers so that when success strikes,
one is always ready to handle it. The serverless technology is well scaled to take up
even 40,000 users within just six months without a single server.
 Lowered Cost
Serverless helps in saving costs of computing power and human resources, as well. It
well optimizes all sorts of concerns such as authorization, image processing, and even
presence detection. This means you don't have to invest in servers or the operational
costs, separately unnecessarily.
 Higher Time for Better User Experience

4. Front users are least concerned about the infrastructure or the technology
implemented. In fact, all they care about is the featured experiences they receive.
Serverless architecture helps the developer team to stay focussed on the resources on
such elements that keeps the users contented. This is how one can make use of a
serverless infrastructure for offering a rich interface for a real-time view of the
operations, decisions, and other enhanced operations.
 Superior Latency and Geo-location Factors
The ability of an app's scalability depends on three major things: the number of users,
their locations, and the network latency. Currently, with the global audiences coming
in the picture, latency can create diminishing experiences. However, with the concept
of going serverless, service providers can have their presence points proximate to
every user; therefore, the apps they provide works equally well for all. Such apps are
well aligned with low-latency experiences, real-time messaging for staying connected
with the users and streaming geo-location updates.
How Start-ups can Power Themselves with Serverless Computing for Building
Applications
Serverless computing goes 100% flexible and highly cost-effective for the developers to test
and deploy functions of the applications for all types of enterprises. It has been; therefore,
the most favourite talk amongst the start-ups looking for cost-effective ways to take their
business on a global scale. Serverless computing is also known as the Function-as-a-Service
and is expected to be the next big thing in the world of cloud service delivery models. With
this, the enterprises are getting even smarter. To be precise, start-ups are envisioning their
future with the serverless approach at the highest level. The prime focus of the start-ups is to
receive better resource management, stay flexible with utmost reliability, and cost-optimized
ways.
Going serverless can be a higher leveraging factor for these start-ups in the following
manner-
 Serverless Technology Will be used for Building MVPs
It is mainly due to the exceptional agility level of the concept of serverless computing
that it will popularly be used by themajor to minor enterprises for building Minimum
Viable Products (MVPs). This means serverless will turn out to be a major swivel for
the start-ups altogether. With this, they wouldn't further need any separate IT
resources till their app developed doesn't pass the initial validation phase. Serverless
also offers complete flexibility in modifying the start-ups and their functions which
makes it even more straightforward to alter their MVPs at any time.
 Serverless Will Transform the Way Start-ups Use IoT Apps

5. IoT apps play a vital role in transforming the business scenarios for the start-ups by
adding the ability to their operations. Most of the IoT implementations are accurate,
task-specific, short-term, and enormous. Serverless computing thus remains the best
platform for rendering a distributed system architecture that well aligns with its
capabilities. Serverless approach innovatively helps it efficiently building a stable IoT
system that is well focused towards the enhanced productivity.
 Open Source Serverless Frameworks are On High Rise
Serverless architectures, such as AWS Lambda, Microsoft Azure, Fission, IBM
Bluemix, Iron.io, and the Google Cloud Platform are on a high rise today. They offer
complete freedom for various start-ups for exploring more enormous possibilities of
the serverless computing without involving any commercial constraints.
Currently, only a few vendors are offering serverless technologies namely, Amazon's AWS
Lambda, IBM's OpenWhisk, Microsoft's Azure, and Google cloud that is currently
dominating the serverless cloud landscape but, very soon the concept is going to be spread
around due to the major business benefits associated with it.