When should I use IaaS vs. PaaS?

Use IaaS when you need full control over the operating system and environment (legacy applications, specific OS requirements, custom networking). Use PaaS when you want to focus on your application without managing infrastructure (web applications, APIs, databases). PaaS is simpler; IaaS offers more control and flexibility.

How do I control IaaS costs?

Right-size instances (do not over-provision), use reserved instances for stable workloads (40-60% savings), implement auto-scaling for variable workloads, shut down non-production resources outside business hours, use spot instances for fault-tolerant workloads, and set up cost alerts and regular reviews.

IaaS can be very secure, but security is a shared responsibility. The provider secures the physical infrastructure. You must secure: operating systems (patching), network configuration (security groups, NACLs), access management (IAM), data encryption, and application security. Follow cloud security best practices and compliance frameworks.

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Infrastructure as a Service (IaaS)

Infrastructure as a Service

Also known as:cloud infrastructurevirtual infrastructureinfrastructure on demand

A cloud computing model providing virtualised computing resources over the internet, including virtual machines, storage, and networking that businesses manage themselves.

In-Depth Explanation

Infrastructure as a Service (IaaS) provides fundamental computing resources -- servers, storage, networking -- over the internet on a pay-as-you-go basis. It replaces physical hardware with virtual infrastructure that can be provisioned and managed programmatically.

IaaS components:

Compute: Virtual machines, bare metal servers
Storage: Block storage, object storage, file storage
Networking: Virtual networks, load balancers, firewalls, VPN
Databases: Managed database services (though some classify this as PaaS)

IaaS vs. PaaS vs. SaaS:

IaaS: You manage OS, middleware, runtime, data, applications (most control, most responsibility)
PaaS: You manage data and applications (moderate control, less responsibility)
SaaS: You manage only data/configuration (least control, least responsibility)

Major IaaS providers:

AWS: EC2 (compute), S3 (storage), VPC (networking)
Azure: Virtual Machines, Blob Storage, Virtual Network
Google Cloud: Compute Engine, Cloud Storage, VPC
DigitalOcean: Simplified IaaS for smaller workloads
Linode/Akamai: Developer-friendly IaaS

IaaS benefits:

No upfront hardware investment
Scale resources up or down on demand
Pay only for what you use
Global deployment across multiple regions
Built-in redundancy and high availability
Access to enterprise-grade infrastructure

IaaS considerations:

You are responsible for OS management, patching, and security
Requires technical expertise to manage
Cost can spiral without monitoring and optimisation
Vendor lock-in risk with provider-specific features
Networking complexity in cloud environments

Business Context

IaaS eliminates the need for businesses to purchase, maintain, and upgrade physical servers, converting capital expenditure to operational expenditure and enabling infrastructure that scales with business growth.

How Clever Ops Uses This

Clever Ops helps Australian businesses leverage IaaS by designing and managing cloud infrastructure on AWS, Azure, or Google Cloud. We configure virtual machines, networking, and storage, implement security best practices, and optimise costs to ensure businesses get maximum value from their cloud infrastructure investment.

Example Use Case

"An Australian media company migrates from leased physical servers to AWS EC2 instances in the Sydney region, gaining auto-scaling during traffic spikes, eliminating hardware refresh cycles, and reducing infrastructure costs by 30%."