Experience  certainty.  

Copyright © 2011 Tata Consultancy Services Limited

Enterprise  Cloud  Services

Harrick  M.  Vin  Vice  President  and  Chief  Scien7st  Global  Head,  Innova7on  and  Transforma7on,  IT  Infrastructure  Services  Tata  Consultancy  Services  

September  2012  

2 Experience  certainty.  

Cloud  Services:  Defined  

Cloud  is:    Cloud  is  not:    

A  services  delivery  pla3orm  that  drives  experience  and  cost  A  technology  

Consumer  perspec7ve:  A  cloud  service  is  characterized  by  ü  Elas8city  (Flexibility):  Grow  and  shrink  on-­‐demand  ü  Usability:  Self-­‐service  with  minimal  administra8ve  overhead  ü  Agility:  Rapid  adapta8on  in  response  to  changes  in  demand  ü  Variabiliza8on:  Consump8on-­‐based  pricing  

Provider  perspec7ve:  A  cloud  service  is  characterized  by  ü  Efficient:  Low  cost  

v  Op8mal  technology  architecture  and  footprint  v  Highly  automated  and  adap8ve  opera8ons  

ü  Transparent  and  auditable  ü  TCO  economic  model  

3 Experience  certainty.  

Cloud  Services  and  Tradeoffs  

Low   High  Cost  variabiliza7on  

Lock-­‐in  

Control  High   Low  

Key  dimensions  of  cloud  services  ü  Service  (“what”)  models:  IaaS,  PaaS,  SaaS,  …  ü  Deployment  (“how”)  models:  Public,  Private,  Community,  Hybrid  

4 Experience  certainty.  

Each  end  of  the  spectrum  presents  different  legal  and  contractual  challenges,  options  and  trade-­‐offs

Many  different  possibili1es  ð  One-­‐size-­‐does-­‐not-­‐fit-­‐all  

Enterprises  =  Hybrid  Clouds  

Breadth  of  requirements  for  enterprise  applica1ons  

5 Experience  certainty.  

Hybrid  Cloud  Planning  Process  –  I    

Public  vs.  Private  Filter  

IaaS  vs.  PaaS  vs.  SaaS  Filter  

Enterprise  Applica7on  PorSolio  

Public   Private  

IaaS   PaaS   SaaS   IaaS   PaaS   SaaS  

Public  Cloud  Services   Private  Cloud  Services  

6 Experience  certainty.  

Hybrid  Cloud  Planning  Process  –  II    

Candidates  for  bundled  SaaS  offerings  

Candidates  for  bundled  PaaS  offerings  

Candidates  for  bundled  IaaS  offerings  

Candidates  for  unbundled  services  (e.g.,  hos8ng,  remote  infrastructure  management,  …)  

Enterprise  IT  por3olio  

SaaS  selec1on  criteria  

PaaS  selec1on  criteria  

IaaS  selec1on  criteria  

7 Experience  certainty.  

Decision  Tree:  Rules  and  Considera7ons  

Public  clouds  ü  IaaS:  Most  desirable  for  workloads  with  high-­‐degree  of  variability  

v AXrac8on:  Apparent  “infinite”  capacity;  Elas8city  ü  SaaS:  Most  desirable  for  COTS  applica8ons  

v AXrac8on:  Standardiza8on,  simplifica8on,  agility  

Private  clouds:  IaaS  vs.  PaaS  vs.  SaaS  ü  Core  vs.  non-­‐core  services  ü  Differen8ated  vs.  commodity  capabili8es  ü  Green-­‐field  vs.  legacy  environments/markets  ü  Desire  for  flexibility  and  innova8on  vs.  agility  

Standardiza7on  of  rules  by  business  domain  

8 Experience  certainty.  

Cloud  Services:  Defined  

Cloud  is:    Cloud  is  not:    

A  services  delivery  pla3orm  that  drives  experience  and  cost  A  technology  

Consumer  perspec7ve:  A  cloud  service  is  characterized  by  ü  Elas8city  (Flexibility):  Grow  and  shrink  on-­‐demand  ü  Usability:  Self-­‐service  with  minimal  administra8ve  overhead  ü  Agility:  Rapid  adapta8on  in  response  to  changes  in  demand  ü  Variabiliza8on:  Consump8on-­‐based  pricing  

Provider  perspec7ve:  A  cloud  service  is  characterized  by  ü  Efficient:  Low  cost  

v  Op8mal  technology  architecture  and  footprint  v  Highly  automated  and  adap8ve  opera8ons  

ü  Transparent  and  auditable  ü  TCO  economic  model  

9 Experience  certainty.  

Efficient  Architecture  and  Design  

Low  cost  architectures  ü  Loose  coupling  across  layers  and  components  

v Each  component  is  replaceable  (commodi8zed)  ü  Leverage  commodity  components  ü Design  for  failures  

Right  sizing  and  sharing  ü  Exploit  sta8s8cal  mul8plexing  

v Demand  characteriza8on  ü Well-­‐engineered  over-­‐provisioning  ü Demand  forecas8ng  and  just-­‐in-­‐8me  provisioning  

10 Experience  certainty.  

Efficient  Opera7ons  

Efficient  opera7ons  =  Automa7on  ü  Automa8on  requires  standardiza8on  

Common  approach:  Standardize  on  services  ü  Constraining:  Limits  innova8on  and  agility  ü  Mostly  feasible  at  lower-­‐levels  (e.g.,  infrastructure)  ü  Standardiza8on  at  applica8on  or  higher  levels  are  elusive  

Novel  approach:  Standardize  on  knowledge  ü  Capture,  formalize  and  disambiguate  tacit  knowledge  ü  Standardize  ways  to  automate  services  using  knowledge  ü  Challenge:  Maintain  currency  of  knowledge  

v  Maintain  and  improve  knowledge  through  con8nuous  learning  

Experience  certainty.  

Copyright © 2011 Tata Consultancy Services Limited

Ques1ons?  

For  more  informa8on,  contact:  Dr.  Harrick  Vin  harrick.vin@tcs.com