The aim of the SDLC process is product-related. Its goal is to create a product that is high-quality, effective, and cost-efficient. After the product is developed, the SDLC maps the implementation of the software into a live environment. The general methodology of the SDLC typically consists of analysis (of both design and specific requirements), construction, testing, release, and then, maintenance. As you can see, the focus is on the software or product. The SDLC is most commonly implemented using an Agile or Waterfall approach.
ITIL® Foundation has no prerequisite, but every certification afterwards does. ITIL® Practitioner and the ITIL® Intermediates have a prerequisite of ITIL® Foundation. Those taking the ITIL® MALC exam must hold ITIL® Foundation certification and have gained 17 credits throughout the ITIL® scheme by studying ITIL® Foundation and a selection of ITIL® Intermediate qualifications.
Just like achieving an ITIL certification provides higher paying job opportunities and bolsters a resume, the expertise gained will also often give you more options in terms of job roles within the organization. Candidates with proficiencies in any of the upper-level ITIL courses will have their pick of the litter right away when it comes to where they want to go and what they want to do. So often in IT, employees must “pay their dues” so to speak, and settle on low-level roles or contractor positions until they prove themselves and showcase the knowledge and skillset required for more lucrative opportunities. With an ITIL certification, employees can often skip this process, and recruiters may decide to take input from the certified professional on where he or she wants to go right away at a competitive starting salary.

ITIL® Foundation has no prerequisite, but every certification afterwards does. ITIL® Practitioner and the ITIL® Intermediates have a prerequisite of ITIL® Foundation. Those taking the ITIL® MALC exam must hold ITIL® Foundation certification and have gained 17 credits throughout the ITIL® scheme by studying ITIL® Foundation and a selection of ITIL® Intermediate qualifications.
Organizations and management systems cannot claim certification as "ITIL-compliant". An organization that has implemented ITIL guidance in IT Service Management (ITSM), may be able to achieve compliance with and seek certification under ISO/IEC 20000. However, while relatively closely aligned, ISO/IEC 20000 and ITIL Version 2 do not define identical processes.[59] This gap has become much wider with ITIL versions 2007 and 2011. ITIL now defines twice as many ITSM processes as ISO/IEC 20000 (26 compared to 13),[60] but there are also more subtle differences, for example:[61]
Service Strategy: This phase focuses on defining services as strategic assets, and then maintaining and implementing a coherent, deliberate strategy. Service strategy principles address business processes, corporate governance and compliance, policies, corporate culture and decision-making, and ensure that the business is geared for service improvement.
ITIL Master Badge (Purple, with the letter M in the middle). Currently in pilot phase this qualification has no training course or exam associated with it. To gain qualification as an ITIL Master, candidates have to have his/her work peer-reviewed by a panel of experts. Once an ITIL Expert has achieved this status, the ITIL Master can wear a lapel pin based on the colour of the ITIL Service Design book, which also has a Gold M in the centre.
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