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Containerisering

Containerisering, or containerization, is a method of packaging software into lightweight, portable execution environments called containers. A container bundles an application with its dependencies, libraries and configuration, sharing the host operating system kernel but running in isolated processes. This provides consistency across development, testing and production, and enables rapid deployment, scaling and resource efficiency.

Containers rely on operating system level virtualization rather than full virtual machines. They use features such

Historically, containerization grew from early ideas like chroot and LXC, gaining popularity with Docker in the

Benefits of containerisering include reproducible environments, efficient use of system resources, faster startup times, and easier

Challenges involve security and governance, such as securing the container supply chain and preventing privilege escalations.

Containerisering is widely used in microservices architectures, testing pipelines, edge computing and data science workloads, where

as
Linux
namespaces
and
cgroups
to
isolate
processes,
and
depend
on
container
runtimes
(for
example
runC)
and
image
formats.
Images
are
built
from
layered
filesystems
and
stored
in
registries.
Containers
can
be
distributed
and
started
quickly,
and
orchestration
systems
can
manage
large
numbers
of
containers
across
clusters.
early
2010s
and
with
subsequent
adoption
of
orchestration
platforms
such
as
Kubernetes.
These
tools
have
shaped
how
modern
software
is
developed,
tested
and
deployed,
especially
in
cloud-native
environments.
scalability.
Containers
promote
portability
across
different
infrastructures,
from
on‑premises
to
public
cloud,
and
support
continuous
integration
and
delivery
workflows.
Managing
multi-container
deployments,
storage,
networking,
monitoring
and
observability
can
add
complexity.
Ensuring
image
provenance,
vulnerability
scanning
and
consistent
configurations
remains
important.
isolated,
scalable
and
portable
environments
improve
development
speed
and
reliability.