Managed Services

run applications in cloud the same way it is run in data center
CLOUD SERVICES :
- Iaas
- Paas
- Faas
- Caas
- Serverless
- Saas

IAAS

use only infrastructure (ONLY VM) to deploy applications or databases
You're responsible for :
- Application Code and Runtime
- Configuring load balancing
- Auto scaling
- Os upgrades and patches
- availability

PAAS

use platform provided by cloud
You're responsible for :
- Configuration
- Application Code
Cloud provider is responsible for :
- OS
- Application Runtime
- Auto scaling, avalabilty and load balancing
Types:
- CAAS - Container as a Service - Container instead of Apps
- FAAS - Function as a Service - Functions instead of Apps
- DATABASES - Relational and NoSQL, Queues, AI, ML, Operations

CAAS

Microservices

Enterprises are now using micriservices architecture
- build small focused microservices
- flexibilty to innovate
deployments become complex
deployments can be done using Containers

Containers - DOCKER

create docker image for each microservices
docker image has :
- application runtime
- application code and dependencies
runs same way on any infrastructure
ADVANTAGES OF DOCKER :
- light weight
- isolation for containers
- cloud neutral

Container Orchestration

FEATURES:
- Auto scaling
- Service Discovery
- Load Balancer
- Self Healing
- Zero downtime deployments

Serverless

No need to focus on server(infrastructure) rather focus on code
pay for use (zero requests - zero cost)
cloud managed service takes care of all that is needed to scale your code to serve millions of requests

SAAS

centrally hosted software
pay as you go
You're responsible for :
- Software Configuration
- Content
Cloud is responsible for:
- OS
- Application Runtime
- Auto Scaling
- Availabilty
- Load Balancing
- Application code
- Application configuration

Shared Responsibilty Model

Security is a shared responsibilty of GCP and Customer
You're responsible for :
- SaaS :
  - Content
  - Access Policies
  - Usage
- PaaS :
  - SaaS
  - Deployment
  - Web application security
- IaaS :
  - PaaS
  - Operations
  - Network Security
  - Guest OS
GCP is responsible for :
- Hardware
- Network
- Audit Logging
- Encryption
- IAM
- KMS